The SRAM Power Chain 1091 10 Speed Chain has no weakest link. SRAM's new super narrow 10-speed power chain features the Power Lock connecting link
- the only secure tooless attachment device for a sub 6mm chain in today market. SRAM PC 1091 R series chains also feature hollow pin construction & outer plates with lighting holes for weight savings with no sacrifice of strength. Lightweight, smooth, precise-shifting. A true high-performance product. Compatibility extends to industry-standard 10-speed systems.