Gupbes 5 PCS HSS COBALT MULTIPLE HOLE 50 Sizes STEP DRILL BIT TOOL SET W/ Aluminum Case Step Drill Bit HSS Drill Bit

Features: This set replaces 50 individual drill sets. Made by Long life high speed steel. Self starting no need for a hole. Cobalt coated to reduce friction and run cooler. Automatically deburrs holes as you drill. Includes protective padded aluminum case. Specifications: 3/16 to 7/8 Drill Bit: 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 ). 1/4 to 3/4 Drill Bit: 9 Steps (1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 ). 1/8 to 1/2 Drill Bit: 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 ). 3/16 to 1/2 Drill Bit: 6 Steps (3/16 1/4 5/16 3/8 7/16 1/2 ). Aluminum Case Dimension: 6 x 4 x 1 1/2 Package Includes: 5 x Drill Bits. 1 x Aluminum Case.