Wolf Tooth's Chainring Bolts and Nuts are all machined to a high standard from 7075-T6 aluminium at the brand's US headquarters. Optimised for a single chainring, they have a 4mm hex socket on the bolt and a 6mm hex socket on the nut. With a tightening torque of just 7-8 Nm with light grease, they're compatible with any of Wolf Tooth's Drop-Stop chainrings with through holes, including the 110 and 130 BCD, as well as the single chainrings of other brands.