The UNIOR Mini Chain Tool 1647/5MINI is the essential emergency tool that every cyclist should slip into their jersey pocket or saddle bag. Weighing only 53 grams and with ultra-compact dimensions (67 × 43 × 11 mm), this pocket chain tool combines Slovenian ingenuity and professional efficiency. Shorter than a tire lever in length, it remains a genuine forged tool, capable of driving out a chain pin with the same precision as workshop tools. Its folding handle reveals a second clever function: a valve core remover compatible with Presta and Schrader valves. Manufactured by Unior in its forges in Zreče (Slovenia) since 1919, this mini-tool embodies the "Made in Europe" philosophy: quality, longevity, thoughtful engineering.

Technical Highlights

• Extended compatibility: Works with all 5 to 11-speed chains (road, MTB, gravel), covering the majority of modern and older transmissions with variable sprocket spacing.
• Professional working geometry: The 6.8 mm diameter drive pin and chain support maintain the link perfectly aligned, preventing bent pins or damaged plates.
• Integrated dual functionality: The folded handle serves as a valve core remover for Presta (road, gravel) and Schrader (MTB, fat bike) valves, eliminating the need for an additional tool.
• Unior forged construction: High-strength steel forged in-house at Slovenian factories, guaranteeing robustness and longevity even in extreme conditions.
• Ultra-lightweight design: Only 53 g — you'll forget it's in your equipment, but it will always be there when you need it.

Use and Ergonomics

This miniature chain tool was designed for emergencies during rides: a chain break hours away from a workshop, the rest of the route to complete to reach the car, and the imperative of having an effective tool in a jersey pocket. The Mini Chain Tool+ 1647/5MINI meets these requirements. Its folding handle provides sufficient leverage to drive out a stubborn pin without slipping, while the threading of the push screw is machined with precision that guarantees straight alignment of the pin. The chain support firmly holds the plate against the drive pin, ensuring high-precision work despite the tool's reduced size. This is not a miniaturized workshop tool: it's a compact tool designed to accomplish a single task under conditions where any ineffective tool becomes dead weight.

Unior Heritage and Slovenian Manufacturing

Unior has been hand-forging tools since 1919 in Zreče, Slovenia, in the heart of Europe. The manufacturer is among the three largest forgers in Europe and equips many professional road and MTB teams (including Team Sky mechanics). The brand's "Z" logo recalls the factory's geographical location. With over 2,100 employees in Slovenia and 3,750 worldwide, Unior produces 7.6 million pieces per year — hand tools, forged parts, CNC machines. The company controls the entire manufacturing process, from 200-ton forging to final assembly, in its own factories under strict quality control. Every Unior tool benefits from a lifetime warranty, a guarantee of durability and environmental responsibility.

Applications and Recommendations

The 1647/5MINI is the essential companion for long rides, bikepacking trips, MTB and gravel raids, or simply any ride where mechanical self-sufficiency is critical. Compatible with Shimano, SRAM, Campagnolo and KMC chains from 5 to 11 speeds (note: not compatible with SRAM AXS Flat-Top 12-speed chains or Campagnolo 12-speed rivet pins, which require specific workshop inserts), it covers most transmissions you'll encounter on a long ride. The integrated valve core remover also allows you to check or replace a faulty valve core on the road, avoiding a slow puncture or unexplained pressure loss. A minimalist tool, maximalist in efficiency.