Square Hole Drill Bit, Steel Hardness Sharp Mortising Chisel Set 1/2-Inch, 1/4-Inch, 3/4inch, 3/8-Inch, 5/8-Inch, 5/16-Inch, 9/16-Inch Woodworking Mortiser Drill Bit-7pcs

👍 Sharp -These square hole drill bits made of bearing steel, hardness 56HRC, lengthened core, sharp cutting edge, continuous blade, quick cuttings, high efficiency. 👍 Our woodworking morstising chisel bits set Only use for the opening square hole and keyhole drill -- Square hole drill can not be used on an electric drill, bench drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use. 👍 Very cost-effective -- Mortise and tenon square hole drilled by SaferCCTV + outer sleeve in the middle of the combination Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industrie 👍 Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements - 1/2-Inch(12.7mm), 1/4-Inch(6mm), 3/4inch(19mm), 3/8-Inch(9.5mm) , 5/8-Inch(16mm), 5/16-Inch(8mm), 9/16-Inch(14mm). 👍 Unique service can make you rest assured to buy--(1)Warranty 14 months,a warranty system, to provide repair parts. (2) Professional sellers, and professional guidance, have more tool accessories to choose. (3)Provide professional use tutorials. (4) Often give away free tool products (because we clean stock). Please contact us if you need any of the above services. Long time warranty & unique value
Warranty 14 months,a warranty system, to provide repair parts.

Professional sellers, and professional guidance, have more tool accessories to choose.

Provide professional use tutorials,pls contact us.

Often give away free tool products (because we clean stock),pls contact us.

Be careful
The blade edges are extremely sharp (be careful) and the bit is well lubricated.

This is a life saver when it comes to making handles for wood lathe tools.
For those of you unfamiliar with mortising chisels, these will drill a square hole for you. Take your time and be sure to keep things well lubricated.
The shaft space is milled perfectly with no play whatsoever. That means you will get a great hold alignment that is straight and clean. No doubt these people know how to make great tools.

Use matters:
Square hole drill is mainly used for woodworking aspects. Various existing bits, can only process a circular hole,
square hole can not be processed, to machining square hole, must drill the hole or cutting machine processed crude hole, then chisel made from artificial hand.
The utility model in the hole drilled by the rotary body, while the impact of the use of hammer impact force transmitted to the outer body,
the material crushing round hole and square head wall, a one-time processing of a square hole, and the dust can be broken slag discharged from the tube.

Package nclude:
1 x 1/2-Inch(12.7mm)
1 x 1/4-Inch(6mm)
1 x 3/4inch(19mm)
1 x 3/8-Inch(9.5mm)
1 x 5/8-Inch(16mm)
1 x 5/16-Inch(8mm)
1 x 9/16-Inch(14mm)