IP2M Logo
IP2M

Patent CN206216564U

Updated October 23, 2026

Modular Wrench with Screw-On Heads

Instead of a bag of separate wrenches, one handle with a threaded hub at the top. Screw on the adjustable jaw head for nuts and bolts, a hex socket head for internal-hex fasteners, or both at once on opposite sides. A sleeve on the end of the handle takes a length of pipe when a bolt needs more leverage.

  • China utility model - lapsed
  • No filings outside China
  • Hand tools
  • Steel parts, no electronics
Request a Quote How it works →
Modular Wrench with Screw-On Heads - patent drawing

🔀

Three-way hub

Threaded sockets on the left, top and right of the handle hub accept screw-on tool heads.

🔧

Adjustable jaw head

A worm-gear adjustable wrench head screws on for nuts and bolts of different sizes.

⬡

Hex socket head

A screw-on hex head for internal-hex fasteners - change heads instead of changing tools.

🪜

Pipe sleeve for leverage

A sleeve at the end of the handle takes a steel pipe as an extension for stubborn bolts.

🔥 Popularity – views

Bring this product to market

  1. ✓ Patent vetted China-only family and legal status checked
  2. 2 Product brief · now How it works, uses and options written up
  3. 3 Prototype First samples for buyers to review
  4. 4 Pilot run Small first batch for launch customers
  5. 5 Volume production Repeat orders at scale

Buyer interest

– of 100 buyers needed to start prototyping

or request a quote Share to speed it up:

One click, no sign-up. Each vote is one real visitor, and products with the most interest go to prototyping first.

Build team: no members yet. Need a partner, co-funding or skills to build this? Join and we introduce the team once it forms.

Join the build team

Want to develop this product with others? Tell us what you can bring. When the team has enough people, we introduce the members to each other by email.

I can help with (pick any)

Letters only. The team list on this page shows your country and the first 5 letters of your name (e.g. "Micha**"); leave the name blank to appear as "Anonymous".

No money is collected on this site. IP2M does not hold or manage funds, and pledges are non-binding. We email you a link to confirm; only confirmed members are introduced to each other. See our privacy policy.

The problem

Maintenance work usually needs several wrenches: an adjustable wrench for nuts, hex keys for socket-head screws, and sometimes a length of pipe slipped over the handle for a seized bolt. The patent describes the result as a cluttered tool bag, more to carry and more time spent finding the right tool.

The solution

The patent turns the wrench into a handle plus screw-on heads:

  1. The handle (1) ends in a hub (3) with three internally threaded sockets - left (4), top (5) and right (8).
  2. Each tool head has a threaded post (6) that screws into any socket.
  3. The heads shown are a hex socket head (7) and an adjustable wrench head (9) whose moving jaw (13) is set by a worm gear (11) on a pin (10), against a fixed jaw (12).
  4. A magnet inside the hub and a reinforcing seat at the handle joint add stability.
  5. An adapter sleeve (2) at the bottom of the handle takes a steel pipe as an extension; the handle has an anti-slip rubber sleeve.
Modular Wrench with Screw-On Heads - Patent drawing - handle, hub and heads
Patent figure 1 - handle (1), pipe sleeve (2), hub (3) with threaded sockets (4, 5, 8), hex head (7) and adjustable jaw head (9) on threaded posts (6).

Who it is for

  • Tool brands and importers looking for a modular wrench or a compact multi-head kit.
  • Facility, appliance and equipment maintenance suppliers whose technicians carry a small kit.
  • Automotive, bike and marine accessory sellers who sell roadside and onboard tool kits.

How it works

The main parts

No.PartWhat it does
1HandleMain lever, with an anti-slip rubber sleeve.
2Adapter sleeveAt the handle end; a steel pipe slides in for extra leverage.
3HubHead of the handle; holds a magnet and has three threaded sockets.
4, 5, 8Threaded socketsLeft, top and right; internal threads accept the tool heads.
6Threaded postsOn each tool head; screw into a socket.
7Hex socket headFor internal-hex fasteners; a divider separates it from its post.
9Adjustable head bodyCarries the jaws and the worm gear.
10, 11Pin and worm gearTurning the worm moves the jaw.
12Fixed jawUpper jaw.
13Moving jawLower jaw, adjusted by the worm gear.

Using it

  1. Choose a head - adjustable jaw for nuts and bolts, hex head for socket screws.
  2. Screw it into a socket on the hub - left, top or right, whichever gives the best angle and clearance.
  3. For the adjustable head, turn the worm gear (11) until the jaws fit the nut.
  4. Turn the handle as with any wrench.
  5. For a stubborn bolt, slide a steel pipe into the sleeve (2) at the end of the handle to lengthen the lever.
  6. Unscrew the heads and store them with the handle.

Applications

Equipment and appliance maintenance

Technicians who meet both hex nuts and socket-head screws on the same machine.

Vehicle, bike and boat kits

One handle and a few heads take less room than a set of separate wrenches.

Plumbing and fittings

The adjustable head for fittings and nuts; the pipe sleeve for extra torque.

Furniture and fixture installation

Assembly crews working with mixed hardware.

Modular tool systems

A starting point for a brand’s own family of screw-on heads.

Where it is less suitable

  • High-torque industrial work - threaded head joints are a weak point compared with a one-piece wrench; heavy torque needs testing or a different joint.
  • Precision torque work - use a torque wrench.

Frequently asked questions

How do the heads attach?

Each head has a threaded post that screws into one of three threaded sockets on the hub at the top of the handle - left, top or right.

Which heads come with it?

The patent shows an adjustable worm-gear jaw head and an internal-hex head. Other heads - more hex sizes, open-end or box-end heads, a bit holder - can be added to a kit.

Is a screwed joint strong enough?

Thread size, steel and a locking feature are engineered for the torque target, and every prototype is torque-tested. For very high torque, a one-piece wrench is still the better tool.

What is the sleeve at the end of the handle for?

A steel pipe slides into it as an extension, to give more leverage on a seized bolt.

What does the magnet do?

The patent places a magnet inside the hub to steady the connecting parts.

Can we add our own head designs?

Yes - the hub works as a platform for a family of screw-on heads.

Can this design be made and sold in the US?

The patent was filed only in China and has lapsed, so it does not restrict anyone. Other modular wrench designs may be patented - see Patent & Production - so we recommend a freedom-to-operate check before volume production.

Are you affiliated with the patent owner?

No. IP2M is an independent design and manufacturing service working from the public patent document.

Request a quote

Click Request a Quote below to see our email address - copy it, or open your email app with a ready-made message. Please mention patent CN206216564U in the subject.

Helpful details to include:

  • Your company and sales channel (hardware retail, Amazon, industrial supply, kits…)
  • Heads you want in the set and their sizes
  • Torque target and handle length
  • Finish, grip, branding and packaging
  • Estimated quantity and target price
  • Timeline - when you would like samples and the first shipment

You can also reach us at (332) 203-9997.

Explore this product

Patent & Production →

Patent CN206216564U: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

Interested in building this?

Tell us your target market, quantity and timeline. We reply with options for prototyping, small-batch runs or volume production.

More product-ready patents

All Tools & Workshop patents →
Rolling Tool Box with Telescoping Step Ladder - patent drawing

Tools & Workshop

Rolling Tool Box with Telescoping Step Ladder

Telescoping A-frame ladder with an attached rolling tool box that slides to your working height.

Patent CN206290197U

Folding 3-Handle Wrench Multi-Tool - patent drawing

Tools & Workshop

Folding 3-Handle Wrench Multi-Tool

Folding three-handle wrench multi-tool with magnetic screwdriver bits, saw, file and bottle opener.

Patent CN205290875U

Rolling Auto-Repair Tool Cabinet with Built-In Lights - patent drawing

Tools & Workshop

Rolling Auto-Repair Tool Cabinet with Built-In Lights

Lockable rolling tool cabinet for car repair with interior lights, a lubricant tray, parts drawers and a tool bay.

Patent CN205989314U

Wide-Opening Folding Bolt Cutter - patent drawing

Tools & Workshop

Wide-Opening Folding Bolt Cutter

Bolt cutter with linked, gear-meshing handles that open up to 190° and fold in half for storage.

Patent CN207206226U

Nail-Holding Hammer with Fold-Out Drivers - patent drawing

Tools & Workshop

Nail-Holding Hammer with Fold-Out Drivers

Hammer with a nail-holding T-slot in the head and fold-out drivers stored in the handle.

Patent CN205254927U

Adjustable-Shelf Tool Cabinet with Window Door - patent drawing

Tools & Workshop

Adjustable-Shelf Tool Cabinet with Window Door

Tool cabinet with slot-in shelves at any height, spring-pin locks, hooks and a window door.

Patent CN206263916U

Browse by category

This page is based on the public patent document CN206216564U, assigned to Jinyun County Osaka Xida Packaging Co., Ltd.. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.