Praxis Works Mid-Compact Ring Set 110BCD 36/52T Buzz SportSimple, economic replacement set Cold forged 7075 T6 aluminum and hard anodized for durability LevaTime: Praxis unique timing and shifting technology Not compatible with Campagnolo Fulcrum Ultra Torque Racing Torque cranksets * 32 48t rings: this is a custom ring set that can only be installed on the new Praxis Works branded 110BCD road cranks, and also the new Specialized alloy 110BCD spider. This specific set includes custom bolts required for