TheSram PC 1130 11 Speed Chain with Powerlock.The new SRAM Rival 22 groupset delivers immense performance across a broad variety of bikes and disciplines. Paved or not. Cyclocross or triathlon. Road racing or unchartered journeys. Rival 22 provides the ergonomics, efficiency and technology for finely tuned cyclists to meet each challenge and expand their limits. Sram PC 1130 11 Speed Chain with Powerlock Features Strong, precise and lightweight PowerLock™ connecting link Technology Highlight(s): PowerChain™/ Powerlube™/ Powerlock™/ SolidPin™/ Chrome Hardened Pins: Compatible Gears: 11 Closing Link: Powerlock™ Weight: 259g (114 links) Material: Nickel Silver outer plates & Grey inner plates , PowerLock™ 11S Silver