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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 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: 1 X 1/2 Inch (12.7mm) Drill Bit 1 X 1/4 Inch (6.0mm) Drill Bit 1 X 5/16 Inch (8mm) Drill Bit 1 X 3/8 Inch (9.5mm) Drill Bit 1 X 7/16 Inch (11mm) Drill Bit Note: Please allow slight deviation due to manual measurement
DRILLING SIZE: Square holes can be easily punched, 1/2 Inch (12.7mm), 1/4 Inch (6.0mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 7/16 Inch (11mm)
MATERIAL: These square hole drill bits are made of high-speed steel, after heat treatment, the drill bit has a high hardness and a sharp square chisel, which is not easy to break and break
DURABLE: It is very suitable for drilling square holes in wood with a tongue-and-groove machine or tongue-and-groove attachment, and has a long service life, so it can be used with confidence
SAVE TIME: Save time-these woodworking inlay chisels can reduce the labor intensity of construction workers, speed up construction, and reduce construction costs in the construction, installation, renovation, and decoration industries
PACKAGE LIST: Includes 5 PCS Wood Square Hole Drill Bits
