Feature

●Professional Woodworking Made Easy - Set of 5 High-Speed Steel Square Hole Drill Bits for faster construction speed & reduced labor intensity. Fits all mortising machines & drill press attachments.
●Superior Chip Extraction Design - Our Wood Chisels Set is designed with high concentricity & lengthened core for quick & precise cuts. Perfect for drilling square holes in wood.
●Versatile Square Hole Drill Bit Set - Includes 5 different sizes to meet different drilling needs. Use with mortising attachment for drill press, mortising machine, or our square hole drill bit adapter.
●High-Quality Spiral Saw Blade - Our Wood Drill Bits are made from high-speed steel material for durability & longevity. The spiral blade ensures efficient chip extraction & improved cutting performance.
●Easy to Use Accessory - Our Square Hole Drill Bit Set is the perfect wood cutting accessory for both beginners & professionals. With its easy-to-use bracket, you can easily attach the bit to your hand or power drill.


Description

* Note:
* Square hole drill can not be used on an electric drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use.
* To avoid drill bits become overheated and get burned up due to fast rotary friction, we suggest use cutting fluid to keep the bits cold during usage.
* Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc.
* The utility model in the hole drilled by the rotary body, while the impact of the use of hammer impact force transmitted to the outer, body the material crushing round hole and square head wall, a one-time processing of a square hole, and the dust can be broken slag discharged from the tube.
* Material: high-speed steel
* Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity.
* Hardness: HRC48-50
* Size: 1/4 Inch (6.0mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 7/16 Inch (11mm), 1/2 Inch (12.7mm)
* Clamping shank diameter: 19mm (Round)
* Slotting flute diameter Total weight
1/4"(6.35mm) approx 115g
5/16"(8mm) approx 140g
3/8"(9.5mm) approx 165g
7/16"(11mm) approx 190g
1/2"(12.7mm) approx 220g

Shaft length ( Drilling depth ):
1/4"(6.35mm): 50mm
5/16"(8mm): 50mm
3/8"(9.5mm): 55mm
7/16"(11mm): 60mm
1/2"(12.7mm): 75mm

* Package include: 5pcs Square Hole Drill Bit