SaferCCTV 6Pcs Wood Square Hole Drill Bits Mortising Chisel Set, Mortise Chisel & Bit Set, Woodworking Mortiser Drill Bit 1/4-Inch, 5/16-Inch, 3/8-Inch, 9/16-Inch, 5/8-Inch, 1/2 -Inch

Brand: SaferCCTV

Features:

• 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.
• Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, these square hole drill bit include- 1/2-Inch(12.7mm), 1/4-Inch(6mm), 3/8-Inch(9.5mm) , 5/8-Inch(16mm), 5/16-Inch(8mm), 9/16-Inch(14mm).
• High performance flute design geometry for superior chip extraction
• 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 drill bits tool accessories to choose. (3) Please contact us if you need any of the above services.

Details: Features: - Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc. - Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity. - It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools. - This quality set also comes with a convenient plastic storage case. Specifications: - Material: HSS - Hardness: HRC 48~50 - Holder diameter: 19mm (circular) - Drilling core length: 200mm - Slotting flute diameter Total weight - 1/4"(6.4mm) approx 150g - 5/16"(8mm) approx 161g - 3/8"(9.5mm) approx 177g - 1/2"(12.7mm) approx 206g - 9/16"(14mm) approx 251g - 5/8"(16mm) approx 310g Shaft length: - 1/4"(6.35mm): 60mm - 5/16"(8mm):60mm - 3/8"(9.5mm):75mm - 1/2"(12.7mm):60mm - 9/16"(14mm):70mm - 5/8"(16mm):70mm Package Included: - 6x Tenon Hole Drill Bit