1. A set of four pieces, including common dimensions, 6.4mm = 1/4 inch, 8mm = 5/16 inch, 9.5mm = 3/8 inch, and 12.7mm = 1/2 inch.
2. Excellent quality, made of alloy steel material, not easy to be damaged.
3. Contains a heavy-duty positioning center punch tool, which is easy to mark.
Notice: It needs to be used with bench drill, or hand drill larger than 800W or lithium drill larger than 48V.
Package:
1x 6.4mm (1/4 inch) Mortising Chisel Drill Bit
1x 8mm (5/16 inch) Mortising Chisel Drill Bit
1x 9.5mm (3/8 inch) Mortising Chisel Drill Bit
1x 12.7mm (1/2 inch) Mortising Chisel Drill Bit
1x Heavy positioning center punch