Wellgo B143 Platform Pedals. Features: Extruded, CNC machined aluminum with sealed cartridge bearings, DU bushings Grease port for routine maintenance, plus repositionable traction pins Specifications: Platform Dimensions: 107.3 x 100 x 26.1 mm Platform Material: Aluminum Spindle Size: 9/16" (Standard) Spindle Material: Chromoly Steel Bearings: Sealed Traction Pins: 10 Per Side (Replaceable) Color: Black Weight: 384g (Pair)