HRC48-50 high hardness drill: This saw drill bit is made of special steel, heat treatment, HRC48-50, offers high hardness, lengthened core, and high concentricity.
6 Specifications: 6 pieces a pack with different slot diameter to meet your needs.The model diameter is 1/4inch (6.4mm), 5/16inch (8mm), 3/8inch (9.5mm), 1/2inch (12.7mm), 9/16inch (14mm), 5/8inch (16mm)
Practical Hole Drill Bits: This saw drill bit kit will get double effect by matched use with mortise and tenon machine, the hole punching needs to use electric drill, hammer & other tools.
Multi functional drill: Professional drill bit, suitable for construction, installation, renovation, decoration industry, etc.
Great saw bits accessories : These saw bits are great accessories for mortices, chisels and woodworking