YaeKoo Square Hole Mortise Chisel Drill Bit Set, HSS Woodworking Hole Saw Mortising Chisel Hole Drill Bits 6/25" 1/4" 5/16" 3/8" 2/5" 1/2" 9/16" (7

YaeKoo Square Hole Mortise Chisel Drill Bit Set, HSS Woodworking Hole Saw Mortising Chisel Hole Drill Bits 6/25" 1/4" 5/16" 3/8" 2/5" 1/2" 9/16" (7

This item includes 7 different sizes mortise chisel drill bit 6/25 inches (6 mm), 1/4 Inch (6.4mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 2/5 inches (10 mm), 1/2 Inch (12.7mm), 9/16 Inch (14mm). They can meet your different ordinary need. Each square hole drill bit is packed in a single plastic case, easy to maintain. These square hole mortise chisels drill bit are made of high-speed steel / HSS, with heat treatment, high hardness, lengthened core, high concentricity features. These 7 pieces woodworking morstising chisel bits is with high performance flute design geometry, which can offer superior chip extraction. These woodworking drill bits are with long drill core and square chisel, which allow you to lock the hole on the wood easily, can reduce labors, speed up the construction speed, reduce construction costs. These woodworking morstising chisel bits can be used with most mortise and drill accessories. They are widely used for woodworking aspects in construction, installation, renovation, decoration industry, etc.
7 pcs Square Hole Mortise Chisel Drill Bit Tools, HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes 6/25" 1/4" 5/16" 3/8" 2/5" 1/2" 9/16"


Specification:
Material: High Speed Steel(HSS)
Hardness: Up to HRC48~50
Shape of hole: square, rectangle

Shaft length ( Drilling depth ):
-6/25"(6 mm): 45mm
-1/4"(6.4mm): 45mm
-5/16"(8mm): 60mm
-3/8" (9.5mm): 60mm
-2/5"(10 mm): 60mm
-1/2"(12.7mm): 60mm
-9/16" (14mm): 75mm

Clamping shank diameter: 19mm (Round)

Package included:
1 x 6/25"(6 mm)
1 x 1/4" (6.4mm)
1 x 5/16" (8mm)
1 x 3/8" (9.5mm)
1 x 2/5"(10 mm)
1 x 1/2" (12.7mm)
1 x 9/16" (14mm)

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.