Unior 1647/2ABI-US Chain Tool with Replaceable Pin

The Unior 1647/2ABI-US chain tool is a workshop tool for splitting and joining 5- to 12-speed bike chains. It is suitable for mechanics and workshops working on different types of bikes.

• Works on 5- to 12-speed chains, including 12-speed SRAM and Shimano
• Also compatible with 11-speed Campagnolo
• Replaceable driving pin with a ball bearing for smooth operation
• Shelf for freeing stuck pins, useful for stiff links
• Not suitable for SRAM Flattop chains or 3/16" pitch

Technical specifications

• Model: 1647/2ABI-US (SKU 624900)
• Chain compatibility: 5- to 12-speed chains, including 12-speed SRAM and Shimano and 11-speed Campagnolo
• Not compatible with: SRAM Flattop chains and some single-speed chains; works with 3/32" and 1/8" pitches, not 3/16"
• Material: "premium flex" carbon steel; trivalent chrome finish
• Handle: dual-component, knurled surface
• Dimensions: 150 × 22 × 72 mm
• Weight: 175 g
• Pin diameter: 3.4 mm
• Type: screw-operated tool with replaceable driving pin supported by a ball bearing; shelf for freeing stuck pins
• Listed spare parts: 1647.1/4A pin (pack of two), 1647.3 steel ball, 1647.2 pin nut
• Origin: Zreče, Slovenia

Unior was founded in 1919 in Zreče, in present-day Slovenia, where it is still based. For bicycle care, it makes tools, repair stands and wheel equipment. Its name, adopted in the 1970s, comes from the expression “universal tools” and reflects its roots in metalworking.