Segomo Tools 5 Piece SAE Multiple Hole 50 Sizes HSS Step Drill Bit Set With Aluminum Case

5 piece step drill bit set (50 sizes in total) with non-walking drill tips. Made from High Speed Steel 4241 with titanium coating for long life and easy cutting/drilling through steel sheets, aluminum sheets, wood board, plastic board etc. Different sized shanks ensure full compatibility with 1/4, 3/8 and 1/2 inch chuck sizes. The bits come supplied in an organized aluminum case for easy storage and transport. Set includes: Drill Bit 1: (3/8". 10 Steps): 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8. Drill Bit 2: (3/8". 12 Steps): 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8. Drill Bit 3: (3/8". 9 Steps): 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4. Drill Bit 4: (1/4". 13 Steps): 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2. Drill Bit 5: (1/4". 6 Steps): 3/16, 1/4, 5/16, 3/8, 7/16, 1/2.