Combination Drill & Taps
Step Drill Bit 1/8-3/4 Coated Step Cone Drill Bit For Wood Metal Hole Drilling Straight Grooved Hole Drill Bit 1Pcs
See the second picture for details

Features:
Surface Treatment: coated. Classic high speed steel with coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.
Easy Drilling: Two-fluted design provides faster, smoother cutting;Provided with small pressure and the sets can cut through wood, sheet metal, steel and other surfaces.
Specifications:
Material: High speed steel(HSS)
Coating: Coated
Shank: Hex shank/ Triangle shank
Size: 1/4-3/4'', 1/8-1/2'', 3/16-1/2''
Suitable material:wood, sheet metal, steel, Copper, PVC, Aluminium, Cast iron and other surfaces
Note:
Please allow 1-3mm error due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.
Package Including:
1 Set Step Drill Bits