The MAC alloy unsealed pedal features a spindle that is oversized for strength and accepts a 17mm or 15mm wrench as well as a 6mm Allen wrench. The ergonomic shape is designed to grip your foot better than traditional pedal shapes while getting pins out of the way for grinds. A strong, long-lasting, alloy pedal that’s just as good on street as it is at the trails. 100% CrMo axle and hardware Aluminum for strength Multidirectional contour for max grip Large surfaces with all replaceable pins Recessed service cap Accepts 15, 17mm box and 6mm Allen wrench