Best Step Drill Bits

Milwaukee 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9)

NEIKO 10194A Titanium Step Drill Bit, High-Speed Alloy-Steel Bit, Hole Expander for Wood and Metal, 10 Step Sizes from 1/4 Inch to 1 3/8 Inches

NEIKO 10181A Step Drill Bit Set, 3 Piece, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total

toolant Four Spiral Flute Cobalt Step Drill Bit(Pro), 3/16" - 7/8"(12 Step Size) Impact Ready Unibit Step Drill Bit, 1/4" Hex Shank Step Bit for Metal, Stainless Steel, Aluminum, Plastic

ZELCAN Step Drill Bit Set, 5PCS Four Spiral Flute Step Bits for Metal, 50 Sizes Titanium-Coated HSS Drill Bits with 1/4" Hex Shank for Stainless Steel Aluminum Wood Plastic

ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

IRONANT Step Drill Bits, 5PCS HSS Titanium Step Drill Bit Set, 50 Sizes High Speed Steel Step Bits for Metal with Aluminum Case

Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch with Easy-to-Read Step Markings and Targets, 3/8-Inch Hex Shank

THINKWORK Four Spiral Flute Step Drill Bit Set, 5 Pcs HSS Step Drill Bits (1/8"-1-3/8") Unibit Step Drill Bit, 1/4" and 3/8" Shank Step Bits for Aluminum, Wood, Plastic, Metal

Milwaukee 48-89-9212 Step Bit #12 7/8" - 1-3/8"