Unior Master 1647/2BBI-US Chain Tool

- The most advanced chain tool in our range
- With a machined body and precision pin threads for smoother operation and ease of use
- The large handle provides extra leverage and breaks the chain easily
- The Master chain tool features a floating chain support for perfect positioning and support of any chain
- Works with all 6-12-speed derailleur chains, is compatible with the SRAM AXS chain and works with 1/8" single-speed chains
- Also supports peening of Campagnolo 11- and 12-speed chains
- The tool comes with three different interchangeable chain supports: the single-link chain support is pre-installed, while a wider double-link chain support for a better grip on the chain and a dedicated SRAM AXS chain support are also available
- The hidden compartment inside the tool body contains an additional spare chain pin Supplied with:
- Long and short derailleur chain supports (compatible with 6-12-speed derailleur chains)
- Dedicated SRAM AXS chain support
- Campagnolo chain pin block
- Spare chain pin Compatible with:
- All 6-12-speed derailleur chains
- SRAM AXS Flattop chain
- Most 1/8'' single-speed chains
- Peening of Campagnolo 11- and 12-speed chains

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.