Multitool EURO6

The 6-function on-bike multitool with the bit selection a typical roadside fix actually needs. 4, 5, and 6 mm hex; Torx T25; #1 Phillips; and a 1.0 × 5.0 mm flat screwdriver. The kit for riders whose on-bike work is bolt-tightening and rotor-bolt checks, not chain repair or spoke truing.

The 4, 5, and 6 mm hex sizes are the three a typical bike uses most: 4 mm for stem face plates, bottle cages, derailleur-hanger bolts, and Shimano brake-lever clamps; 5 mm for the stem steerer clamp, seatpost binder, and post-mount brake-caliper bolts; 6 mm for flat-mount brake-caliper bolts and some thru-axle handles. The Torx T25 is the standard 6-bolt rotor-bolt size. The screwdriver pair handles cable-tension barrel adjusters, accessory mounts, and the occasional non-bike-specific fix that rides along on every long day in the saddle.

Each bit is chrome-vanadium with a chrome-plated shank and a black-oxide tip, the same construction Unior uses on its standalone shop hex and Torx tools and the larger EURO13 and EURO17 multitools. The bit-quality choice matters most on a small multitool: the handle leverage is short, so the bit-to-recess fit has to carry the load a longer arm would carry on a bench tool. Bikerumor (2017) covered the EURO line at launch:

“The same attention to detail that goes into their pro shop tools makes its way into the consumer multi-tools with the same materials and production methods for the tool bits.”

Bit and function list

• Hex: 4, 5, 6 mm
• Torx: T25
• Screwdrivers: #1 Phillips, 1.0 × 5.0 mm flat
• Total functions: 6

Specs

• Chrome-plated chrome-vanadium bit shanks
• Black-oxide tip treatment for corrosion resistance and recess fit
• 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 EURO6 is the entry tier of the EURO line and the only one in the family with the Phillips and flat screwdriver pair but no chain or valve tools. It is sized for the rider who wants the on-bike tool but doesn't reach for a chain breaker or a spoke wrench often enough to want to carry one.

Pro tip from our mechanics

A 4, 5, and 6 mm hex plus a Torx T25 covers most of the fasteners a rider touches between rides. The sizes outside that range are the 2 mm hex (derailleur limit screws, more often a home adjustment than a trail-side one) and the 8 mm hex (square-taper crank bolts and pedal axles, both workshop work). SRAM AXS road and Eagle MTB riders may also miss the T15 their current brake-lever clamps use, where Shimano lever clamps stay on a 4 mm hex. If your trail kit already has a separate hex tool, the EURO6 is the supplement that adds the Torx and the screwdrivers a hex-only kit can't reach.

For where the EURO6's 3-hex pocket kit fits against the EURO7's 7-hex span and the EURO13 and EURO17's chain-tool kits, and how the on-bike bit selection relates to the bench hex and Torx set: Hex and Torx wrenches: how to pick the right tool for the job →.