HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits

Universal Compatibility

Compatible with 1/4, 3/8, 1/2 electric drills or bench drills, but only work for sheet metal, aluminum or plastic.

Convenient & Precise

Each level of each bit is clearly marked with laser engraving so you can find and drill the precise right diameter every time!

Smooth & Clean Drilling

Dual grooves quickly remove chips and other swarf as you work, keeping your work safe and each hole well deburred.

Distinct Shank Design

Our ¼ and ⅜-inch shanks are engineered for maximal stability and strength to prevent any offset or slippage

Warm Tips:

1. To extend the service life of the step drill bit and facilitate drilling, it is best to add oil before using it.
2. When working with a step drill bit, you need to add water to keep the temperature down.

Specification:

• #5 Bit：1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8"
• #4 Bit：3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"
• #3 Bit：1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
• #2 Bit：3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
• #1 Bit：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"

118° X-type Split Point - Increases cutting speed with self-centering and prevents walking. Two-flute Design - a faster and smoother cutting, allows particles escape easily.	Tri-flatted shank will not spin inside the chunk, compatible with different types of drill machines effectively.	Application - suitable for sheet metal, plastic, aluminum alloy, copper, NOT recommended for high carbon steel, hard metal.