Unior 1670/2BI-US Cassette Removal Tool 11/12 Teeth

The Unior 1670/2BI-US cassette removal tool holds the cassette while you loosen the lockring. It is for anyone working on their bike at home or in the workshop who wants to replace the chain whip with a single tool.

• Replaces the chain whip: holds the cassette while you loosen the lockring
• Two sides: for cassettes with a 10/11- or 12-tooth smallest sprocket
• Three jaws per side with non-slip knurling for a firm grip
• The 12-tooth side has longer jaws, reaching beyond the 10-tooth sprocket on some SRAM and Shimano MTB
• 350 mm handle for easy leverage, made from hardened, chrome-plated steel

Technical specifications

• Model: 1670/2BI-US
• Compatibility: Cassettes with a 10/11- or 12-tooth smallest sprocket
• Jaws: 3 per side, with non-slip knurling on the outer edges
• 12-tooth side: Longer jaws that reach beyond the 10-tooth sprocket on some SRAM and Shimano MTB cassettes
• Handle length: 350 mm
• Material: Special tool steel, hardened and tempered; chrome-plated
• Intended use: Holding the cassette to loosen the lockring, replacing the chain whip (holding chain)

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.