Description:
1. These Square hole drill bits are mainly used for woodworking.
2. Drill holes using these drill bits, if you want the square hole become more tidy then you should chisel the detail part by hand.
3. To avoid the drill bits become overheated and get burned up due to fast rotary friction, we suggest use some cutting fluid to keep the bits cold during usage.
Specification:
Material: high-speed steel
Hardness: HRC48-50
Color: Silver
Drill Size: 1/2 Inch (12.7mm), 1/4 Inch (6.0mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 7/16 Inch (11mm)
Fit for mortising machines and drill press attachments.
Package List:
SET1: 4PCS Woodworking Square Hole Drill Bits
SET2: 5PCS Woodworking Square Hole Drill Bits
SET3: 7PCS Woodworking Square Hole Drill Bits
Note:
Please allow slight deviation due to manual measurement