Multitool EURO17

The 17-function on-bike multitool with the bit selection of a shop hex and Torx set. 2, 2.5, 3, 4, 5, 6, 8 mm hex, T10 and T25 Torx, a #1 Phillips and 1.0 × 5.0 mm flat screwdriver, a chain tool, Schrader and Presta valve core tools, and spoke wrenches for 3.3 mm, 3.45 mm, and DT Swiss nipples. The kit that covers everything from a trailside derailleur adjustment to a chain repair on a multi-day ride.

Each bit on the EURO17 is the same construction as the standalone professional hex and Torx wrenches in the Unior line: chrome-plated chrome-vanadium shanks with black-oxide tips for corrosion resistance and a tight fit to the recess. The bit-quality choice matters more on a multitool than on a shop tool, because trailside repairs happen at the working-torque limits the multitool's small handle can deliver; a sloppy fit will round a fastener at exactly the moment you have no spare tool to switch to.

The chain tool inside the EURO17 is the load-bearing function. The pin is induction-hardened for cyclic-load survival; the body uses the same drop-forged construction as Unior's standalone chain-rivet pliers. A multitool chain tool that bends under load is not a chain tool, it's a chain-tool-shaped paperweight. The EURO17's chain tool is the version that survives the breaks it's asked to make.

Bit and function list

• Hex: 2, 2.5, 3, 4, 5, 6, 8 mm
• Torx: T10, T25
• Screwdrivers: #1 Phillips, 1.0 × 5.0 mm flat
• Chain tool (compatible with most 8–13-speed chains; verify pin compatibility with 12-speed Campagnolo and AXS Flattop)
• Schrader and Presta valve core tools
• Spoke wrenches: 3.3 mm, 3.45 mm, DT Swiss Squorx
• Total functions: 17

Specs

• Chrome-plated chrome-vanadium bit shanks
• Black-oxide tip treatment for corrosion resistance and recess fit
• Drop-forged chain-tool body
• Induction-hardened chain-tool pin
• Hex bits manufactured to the ISO 2936 dimensional standard for metric hex keys
• Manufactured in Slovenia

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The EURO line is one of the few mid-price multitool families produced entirely in Europe; most multitools in this price band are made in Asia regardless of brand badge, and the cost difference shows up in the bit-to-recess fit when you need the tool to work hardest.

Pro tip from our mechanics

A multitool's bits will wear before the body does, especially the 4 and 5 mm hex tips, which see the most engagements on a typical ride (stem face plates, water-bottle cages, brake-lever clamps for a quick angle adjustment mid-ride). When the 4 mm or 5 mm tip starts to feel loose in a fresh bolt, the rest of the tool's still good, but those two bits need to be the ones you watch for wear.

For the full bit-to-fastener map across the hex and Torx spans the EURO17 covers, and the trade-offs between an on-bike multitool's bit selection and a workshop hex and Torx set: Hex and Torx wrenches: how to pick the right tool for the job →.