- Forged and machined 6061-T6 aluminum platform - Concave platform for secure foothold; 11-13mm thin - Premium bearings and seal system - 10 adjustable traction pins per side - Offered in small (100x100mm) and large (114x111mm) sizes for optimal shoe-pedal interface - Small recommended for size 5-10 (37-43). Large recommended for size 10-15 (43-49) - 200lb rider weight limit - 5 year warranty