915 Generation Square Hole Drill Bit, Steel Hardness Sharp Durable Mortisin

Widely Used - Great for drilling square holes in wood with a mortising machine or a mortising attachment.
Easy to Use - It will double effect by matched use with mortise and tenon machine.The square hole punching needs to use electric drill, hammer or other tools.
Save Time - these woodworking morstising chisel bits can reduce labor intensity of construction workers, the construction speed, reduce construction costs for construction, installation, renovation, decoration industrie.
High Quality - these square hole drill bits made of metal, through heat processing, with high hardness drill bits, and sharp-edged square chisel, . Material:metal
colour:Silver + Black Package Contents:
1 x 6/25 inch (6mm) drill bit
1 x 1/4 inch (6.4mm) drill bit
1 x 5/16 inch (8mm) drill bit
1 x 3/8 inch (9.5mm) drill bit
1 x 2/5 inch (10mm) drill bit
1 x 1/2 inch (12.7 mm) drill bit
1 x 9/16 inch (14mm) drill bit Only the above package content, other are not included.
Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.