Although the PC 951 is the "weakest link" in the Power Chain II series from SRAM, it has all kinds of powerful details. Thanks to reinforced chrome pins, the PC 951 can withstand even more intensive use. Curved outer flaps and sloping inner flaps ensure perfect power transmission. And thanks to the chain clasp's exclusive PowerLink™ technology, the chain can be closed easily and, above all, without tools. Extreme strength. Incredible precision. The PowerChain II from SRAM offers better shifting performance on the front derailleur and when shifting to higher gears without sacrificing shifting precision on the rear derailleur. The Step2™ riveting process increases bolt compression force for greater strength and robustness. SRAM® Power Chain II PC 951 chain - Gears: 9-speed - Length: 114 links - Color: Gray tabs - Closure: Power Link(tm) for tool-free assembly/disassembly - Other: New curved outer tabs, new angled inner tab and revised PowerRollers (tm), specially hardened and chromed rivets - Weight: 297 g 1 x SRAM PC 951 chain, with chain lock