1.Produced from GCr15 bearing steel.
2.Includes 3-6, 6-8, 8-11, 11-14, 14-18 and 18-25.
3.Drills includes 3/32in,1/8in, 3/16in, 1/4in, 5/16in, 3/8in.
4.Made from HSS 4241 and black oxide coated.
5.This precision kit allows you to extract bolts which are corroded or seized and need to be removed without damaging the casing or thread.