Shimano K05S-RX Resin Disc Brake Pads and Spring | REI Co-op
Shimano Shimano B01S Resin Disc Brake Pad and Spring, 4th version of B01S pad, fits many Deore, Alivio and Acera Calipers - Philbrick's Ski, Board, & Bike
Shimano xt/xtr metal vs. resin pad compound test - Pinkbike Forum