These pedal pins come in two sizes and the longer pins can be used one of two ways for customizing grip. Features: 16 short pins (8.5mm overall length) for pedal's center section 28 long pins (12.5mm overall length) for pedal's fore and aft edges 2mm allen wrench included Pin sizing works with any pedals that can utilize: M4x0.7x4 Can also be adjusted with 5mm wrench - not included Substitutes: PD5891