Klucky Pucks are the choice of Woodcraft staff members and hundreds of top racers. The pucks are made of a propreitary plastic that is extremely durable yet still provides the feel racers are looking for. The pucks are set on a thick leather backing and utitlize super-strong double loop velcro that ensures that they will never get pulled off while riding. Ranked #1 by Roadracing World among 19 pucks tested. Sold in Pairs.