With a durable machined 6061 aluminium body and a sturdy chromo-steel axle, this pedal is built for longevity. - Bearings: 1 x industrial bearing / 1 x Reverse-Baurillium-bushing. - Pin setup: 16 (11mm) steel pins per pedal (Thread: US Size 6/32", Length: 11mm) (optionally available as an accessory: 9mm & 13mm pins).