9 Sizes Titanium Step Drill Bit, 1/4 to 3/4 Inches High Speed Steel Step Drill Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Unibit Drill Bits DIY Lovers, Multiple Hole Stepped up Bits
Accurate Drilling
Laser engraved sizes provides accurate positioning assistance for precise drilling.
Easy to Use:
You can process different kinds of diameter holes in just one step, which greatly saves you a lot of trouble.
Wide Application
You can process different kinds of diameter holes in just one step, which greatly saves you a lot of trouble.
Specification:
Material: HSS
Size: 9 sizes
Surface: Titanium Coating
Drilling Sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
Multi-purpose: Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron and many other types of sheet metal (excluding hard steel and metal).
Kindly Note:
1. When inject cold water while working, can effectively extend the service life of the drill bit.
2. Made of HSS material, suitable for objects with hardness below 25 HRC.