[5  & 16 in]

[1  & 4 in]

[3  & 8 in]

[1  & 2 in]

7.94/9.5/12.7 mm Woodworking Bridge Chisel Square Drill Bit 1/4 to 1/2 Inch
Specification:
Material: high speed steel
Hardness: HRC48-50.
Size: 1/4 inch (6.5 mm), 5/16 inch (7.94 mm), 3/8 inch (9.5 mm), 1/2 inch (12.7 mm).
Clamp shaft diameter: 19 mm (round).
Length: 210.
Features:
This bridge chisel is suitable for drilling the square holes in the wood with a bridge machine or a bridge attachment.
Square hole drill can not be used on an electric drill, drill square holes need to drill a square hole (insertion and tenon machine) to use
Mortise and spigot square hole drilled through the terrible + outer sleeve in the middle of the combination.
Reduce the labor intensity of construction workers, accelerate construction speed, reduce construction costs for construction, installation, renovation, decoration industry
Note:
Please note that the package includes only one drill
Package includes:
1 x square hole drill.