Wolf tooth 1x chainring bolts and nuts pack of 4constructed from tough and hard wearing 7075 t6 aluminium, this pack 1x chainring bolts will hold your mountain bike's mtb's chainring securely as you're attacking the most challenging sections of the trails'. '.strtoupper('m')ade in the usa, they have an m8 size and a 10mm thread length, making them perfect for use with wolf tooths ldquodrop stoprdquo unthreaded chainrings and many other brands too.features material 7075 t6 aluminium speed single speed eg'. '.strtoupper('s')ingle speed drivetrains and 1x10, 1x11, 1x12 speed drivetrains size m8 x.75 x 5 thread length 10mm compatibility wolf tooth's bolt on drop stop chainrings with unthreaded holes, other brands too torque 7 8 nm tightening torque with light grease on threads onlymade in the usa weight 8gmanufacturer's part numbersblack wt4cbcn06blk blue wt4cbcn06blu gold wt4cbcn06gld green wt4cbcn06grn grey wt4cbcn06gry orange wt4cbcn06org purple wt4cbcn06prp red wt4cbcn06red silver wt4cbcn06sil nickel wt4cbcn06nibuy wolf tooth components from chain reaction cycles, the world's largest online bike store.