SPECS:MATERIAL: U.S.A. Made 7000 Series Aluminum and CNC machinedFIT: 5-Bolt bolt pattern for 110mm spidersCHAINFIT: 3/32″BOLTREQUIREMENT: Typically uses standard (or short) chain ring bolts. Some crank spiders require long boltsCRANKREQUIREMENT: Any crank with 5-Bolt spider or that can be adapted with a 5-bolt spiderWeight: 2.6oz/73.3g (42T)