Rowiz Mortising Chisel Set - 9/16, 5/8, 3/4-Inch 3pcs

Material: These square hole drill bits made of High-carbon steel; through heat processing, with high hardness drill bits, and sharp-edged square chisel, long life. Size: Come with 3 different sizes for your choose; 9/16""(14mm), 5/8""(16mm), 3/4""(19mm). These long square drill bits set can meet most of your needs. High Working Efficiency: Woodworking drill bit sets with long drill core and square chisel; easy to lock the hole on the wood, then you can get different mortisers quickly. Also, it is labor saving. Available Application: These woodworking morstising chisel bits set are suitable for drilling square holes in wood with a mortising machine or a mortising attachment; Also, it fit for electric drill, hammer & other tools. Increased Efficiency: Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries