The Primo Supertenderizer PC Pedal is the PC version of the Supertenderizer Pedal and features a thinner body. Tech Specs Plastic PC version of Primos classic Super Tenderizer pedals. Nylon composite knurled bodies with a huge full-concave platform, slimmer side profile, and 14 molded pins per side. 9/16" 4130 Cr-Mo spindle. Unsealed bearings. Fits most 2 and 3-piece cranks