![Amazon.com: OXMUL Step Drill Bits for Metal, 1/8 to 1/2, Cobalt Bit, Heavy Duty for Stainless Steel,Metal, Aluminum, Wood, Copper, Wood, 13-Steps. #202 : Industrial & Scientific Amazon.com: OXMUL Step Drill Bits for Metal, 1/8 to 1/2, Cobalt Bit, Heavy Duty for Stainless Steel,Metal, Aluminum, Wood, Copper, Wood, 13-Steps. #202 : Industrial & Scientific](https://m.media-amazon.com/images/I/51jLy2fkECL.jpg)
Amazon.com: OXMUL Step Drill Bits for Metal, 1/8 to 1/2, Cobalt Bit, Heavy Duty for Stainless Steel,Metal, Aluminum, Wood, Copper, Wood, 13-Steps. #202 : Industrial & Scientific
![Amazon.com: NEIKO 10189A Titanium Step Drill Bit, High-Speed Alloy Steel Bit, Hole Expander for Wood and Metal, 12 Step Sizes from 7/16 Inches to 1 1/8 Inches : Industrial & Scientific Amazon.com: NEIKO 10189A Titanium Step Drill Bit, High-Speed Alloy Steel Bit, Hole Expander for Wood and Metal, 12 Step Sizes from 7/16 Inches to 1 1/8 Inches : Industrial & Scientific](https://m.media-amazon.com/images/I/71QvlPA+h8L.jpg)
Amazon.com: NEIKO 10189A Titanium Step Drill Bit, High-Speed Alloy Steel Bit, Hole Expander for Wood and Metal, 12 Step Sizes from 7/16 Inches to 1 1/8 Inches : Industrial & Scientific
![IRWIN Unibit 3/8-in 2-Step Drill Bit (7/8-in and 1-1/8-in) in the Step Drill Bits department at Lowes.com IRWIN Unibit 3/8-in 2-Step Drill Bit (7/8-in and 1-1/8-in) in the Step Drill Bits department at Lowes.com](https://mobileimages.lowes.com/productimages/10afd124-f67a-4fef-9834-bab8857d75a6/42174942.jpg)
IRWIN Unibit 3/8-in 2-Step Drill Bit (7/8-in and 1-1/8-in) in the Step Drill Bits department at Lowes.com
![Lenox - Step Drill Bit: 1/2 to 1″ Dia, 3/8″ Shank Dia, High Speed Steel, 9 Hole Sizes - 63361711 - MSC Industrial Supply Lenox - Step Drill Bit: 1/2 to 1″ Dia, 3/8″ Shank Dia, High Speed Steel, 9 Hole Sizes - 63361711 - MSC Industrial Supply](https://cdn.mscdirect.com/global/images/ProductImages/6336171-21.jpg)
Lenox - Step Drill Bit: 1/2 to 1″ Dia, 3/8″ Shank Dia, High Speed Steel, 9 Hole Sizes - 63361711 - MSC Industrial Supply
![Amazon.com: Lichamp Step Drill Bit for Metal Sheet Heavy Duty, Genuine M2 HSS Step Up Down Drill Bit Stepper Unibit for Steel Hole, 10 Sizes from 1/4 to 1-3/8 inches : Industrial & Scientific Amazon.com: Lichamp Step Drill Bit for Metal Sheet Heavy Duty, Genuine M2 HSS Step Up Down Drill Bit Stepper Unibit for Steel Hole, 10 Sizes from 1/4 to 1-3/8 inches : Industrial & Scientific](https://m.media-amazon.com/images/I/51Upxth7J-L.jpg)
Amazon.com: Lichamp Step Drill Bit for Metal Sheet Heavy Duty, Genuine M2 HSS Step Up Down Drill Bit Stepper Unibit for Steel Hole, 10 Sizes from 1/4 to 1-3/8 inches : Industrial & Scientific
![Amazon.com: NEIKO 10197A Step Drill Bit Set, 5 Pc Step Bit for Metal, 50 SAE Sizes Total, 1/8” – 1-3/8”, SAE Titanium High Speed Steel Unibit, Stepper Cone Drill Bit, Two Flute Amazon.com: NEIKO 10197A Step Drill Bit Set, 5 Pc Step Bit for Metal, 50 SAE Sizes Total, 1/8” – 1-3/8”, SAE Titanium High Speed Steel Unibit, Stepper Cone Drill Bit, Two Flute](https://m.media-amazon.com/images/I/71B6NYBHSSL.jpg)
Amazon.com: NEIKO 10197A Step Drill Bit Set, 5 Pc Step Bit for Metal, 50 SAE Sizes Total, 1/8” – 1-3/8”, SAE Titanium High Speed Steel Unibit, Stepper Cone Drill Bit, Two Flute
![Amazon.com: IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic : Industrial & Scientific Amazon.com: IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic : Industrial & Scientific](https://m.media-amazon.com/images/I/81zJqJIDy6L.jpg)