6x M8-30mm Allen head Bolt, thread patch pre applied.6x M8-Flanged Fuji Lock Nut.Bolt/Nut combination is double secured against unwanted loosening:There is tread patch pre-applied on the bolt and the nuts are ?Fuji Lock?.This is a metal ring which deforms during tightening and locks the nut secure.In addition these Nuts are flanged to create a big contact area with the hub. Sprocket Bolt Kit Moto Master 6x M8-30mm Allen head Bolts thread patch pre applied 6x M8-Flanged Fuji Lock Nut. Made in Japan