Shimano's in-molded R50T2 for their CX50 cyclo cross cantilever brake set.Available in 3 different spacer lengths. Short, Medium & Long.Shimano Code: Y-8K5 98040 - 247cycleshop.com
Amazon.com : Shimano BR-4600 R50T2 Brake Shoes, 5 Pairs : Bike Brake Pad Inserts : Sports & Outdoors