The PC-1110 chain recommended for the NX groupset comes from a long line of lightweight, reliable chains that are built to last. Designed with the same proven technology as the XX1 from SRAM, the PC-1110 features solid rivets, PowerLock 11-speed and provides smooth, efficient shifting.Features:Optimized to work with X-SYNC™ chainrings for precise and reliable 11-speed performance. Fully compatible with all SRAM 1x™ Power Lock 11-speed drivetrains Chrome hardened rivets.Weight: 270g.The engineers at SRAM have developed Power Lock: a safe, consistent, tool-free solution for connecting our 10-speed chains. Since PL requires no special tools for installation, the particularly tight tolerances of 10-speed transmission induce that each PowerLock is designed for a unique application.