Crankbrothers Stamp 3 Small Charcoal Grey Flat Bicycle Pedal for Mountain Bike, Magnesium

Material: [body] forged 6061-T6 aluminum, [spindle] forged scm 435 chromoly steel

Removable Pins: 10 adjustable pins per side

Spindle Diameter: 9/16in

Pedal Wrench Type: 8mm allen key

Dimensions: [small] 3.9 x 3.9in (100 x 100mm) [large] 4.5 x 4.4in (114mm x 111mm)