KMC X11SL Superlight 11 Speed Chain - Gold BF New This fastener combination allows float

This fastener combination allows float on both sides of the collar slot ensuring consistent clamping force

Stainless steel pivot hardware

Delrin roller

Outside Diameter: 4

You will not "feel" the oval shape at all

KMC X11SL Superlight 11 Speed Chain - Gold BF New This fastener combination allows floatThe KMC X11 SL 11 speed chain is superlight (SL) and features NON Directional allowing maximum compatibility. The X Bridge system provides quiet, quicker and smoother shifting every time. KMC's X11 series offers great advantages on your current 11 speed system, such as very high durability, super light weight and easy to mount connecting link. Specifications Compatible with all 11 speed systems (Shimano, Campagnolo and SRAM) Super Light Top