KingBra Woodworker 1/2 Inch Mortise Chisel & Bit Set, Square Hole Drill Bits Mortising Chisel Set

Description

Square hole drill the usage of method:
1.installed in the square hole machine directly , supporting the use, you’ll be able to drill a square hole (especially beneficial).
2. If bench drills or electric drills are used, they should be strictly executed according to the operation method. In a different way, they may be able to only be processed into round holes and cannot be processed into square holes.
(1)Mark the position of the hole and use the hole drill to make a hole.
(2)After removing the core, use a square hole jacket to align the position of the hole.
(3)Tap the square hole incessantly and slowly.Then,you’ll be able to get the square hole.

Features:

Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, and so on.
Special steel, heat remedy, HRC48~50, high hardness, lengthened core, high concentricity.
It’ll get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools.

Fits all mortising machines and drill press attachments
Professional wood drill bit
Made of the highest quality tool steel
High performance flute design geometry for superior chip extraction
Packed Included: 1pcs wood drill bit 1/2 Inch