Wolf tooth 1x chainring bolts and nuts pack of 5with their tough aluminium construction, this pack of aluminium chainring bolts and nuts is a great upgrade to replace your old or lost parts and to breathe new life back into your setup'. '.strtoupper('t')hey're are suitable for use on wolf tooth bolt on drop stop chainrings with through holes'. '.strtoupper('p')lus, they can also be used with non wolf tooth branded single chainrings and those with a 110mm or 130mm bolt circle diameter bcd.wolf tooth designed these bolts to be the best on the market'. '.strtoupper('t')hese single chainring optimised bolts have a 4mm hex socket on the bolt and a 6mm hex socket on the nut, so no spanner is needed'. '.strtoupper('t')hese are 6mm long, so they work perfectly with any bolt on single chainring that does not have threaded standoffs.featuresmaterial 7075 t6 aluminiumsize m8 x.75 x 5torque spec 7 8 nm tightening torque with light grease on threads onlycompatibility wolf tooth bolt on drop stop chainrings with through holes, works with other brand's single chainrings as wellbolt circle diameter bcd compatibility 110mm or 130mmmade in the usapart numbers black wt5cbcn06blk blue wt5cbcn06blu gold wt5cbcn06gld green wt5cbcn06grn grey wt5cbcn06gry orange wt5cbcn06org purple wt5cbcn06prp red wt5cbcn06red silver wt5cbcn06silweight 10gbuy wolf tooth components from chain reaction cycles, the world's largest online bike store.