Square Hole Drill Bits for Wood, 4 PCS Woodworking Saw Mortising Chisel Bits,(Size: 6.4mm/8mm/9.5mm/12.7mm)

• 【Material】These square hole drill bits are made of carbon steel, high hardness, durable and practical, heat treatment, and long life for use. • 【4 Different Sized Drill Bits】You will get a total of 4 drill bits, which are 6.4mm / 8mm / 9.5mm/ 12.7mm; This mortising chisel bit set is a must-have for home woodworker DIY woodworking . • 【Compatibility】Fits all mortising machines and drill press attachments. • 【Labor Saving】This drill bit set helps to reduce the labor intensity of construction workers, speed up the construction speed, and reduce construction costs for construction, installation, renovation, and decoration industries. • 【Application】Square hole drill bit is mainly used for woodworking aspects.