2Pcs Wood Drill Bits Square Hole Drill Bits Woodworking Mortising Chisel Countersink Bit Kits Tools 38 Inch 12 Inch

2Pcs Wood Drill Bits Square Hole Drill Bits
Fits all mortising machines and drill press attachments
Set of 4 - 1/4-Inch, 5/16-Inch, 3/8-Inch and 1/2-Inch
Made of the highest quality tool bearing steel
High performance flute design geometry for superior chip extraction
Hardness: HRC 48~50
Features:
Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc.
Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity.
It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools.
Specifications:
Hardness: HRC 48~50
Holder diameter: 19mm (circular)
Drilling core length: 195mm
Slotting flute diameter Total weight
001 1/4 inch(6.4mm) approx 150g
002 5/16 inch (8mm) approx 161g
003 3/8 inch (9.5mm) approx 177g
004 1/2 inch (12.7mm) approx 206g
Shaft length:
1/4 inch(6.35mm): 60mm
5/16 inch(8mm):60mm
3/8 inch(9.5mm):75mm
1/2 inch (12.7mm):60mm
Color: silver + black
Material: bearing steel
Package Contents: 2pcs Opening tool
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

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