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Woodworking 1/2" Inch (12.7mm) Square Hole Drill Bit Mortising Chisel Set, Mortise Chisel & Bit Set for Mortise and Tenon Machine

Woodworking 1/2" Inch (12.7mm) Square Hole Drill Bit Mortising Chisel Set, Mortise Chisel & Bit Set for Mortise and Tenon Machine

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Description
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 001 1/4"(6.4mm) approx 150g 002 5/16"(8mm) approx 161g 003 3/8"(9.5mm) approx 177g 004 1/2"(12.7mm) approx 206g 005 9/16"(14mm) approx 251g 006 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

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