Product Specifications
Type: Step Drill Bit
Material: High Speed Steel 4241
Size: 3/16" to 7/8"
3/16(4.76mm), 1/4(6.35mm), 5/16(7.94mm), 3/8(9.53mm), 7/16(11.11mm), 1/2(12.7mm), 9/16(14.29mm), 5/8(15.88mm), 11/16(17.46mm), 3/4(19.05mm), 13/16(20.64mm), 7/8(22.22mm）
Surface treatment: Titanium plating (Golden)
Suitable hardness: Hardness below 25°
Workpiece thickness: Less than 5 mm

Features
1, Deburring, chamfering, round hole reaming, it can complete the function that the twist drill can not complete
2, Two-Flute Design for smoother cutting and faster removal of chips
3, Tri-flatted side cutouts fits into power tools chuck securely and offer stronger grip for standard drill chuck
4, Perfect for drill holes in steel, copper, plastic, aluminum, and other thin materials (Thickness is below 5 mm)
5, Use tools: hand drill, bench drill

Packaging Includes
1pc * 3/16" to 7/8" Step Drill Bit

【Please NOTE】
Please use water to cool when working, which can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400 rpm!