10pc Axle Spindle Threading Set, Axle Thread Repair Kit with 8 Dies 1-1/16″ Extension Bar, Axle Nut Rethreader with M20 M22 M24 & 13/16″ 3/4″ UNEF Nuts, Rethreading Tool Kit with Case. Each mold uses a special thread design with vertical grooves across the radial threads.