7 11 12 Degree Tapered Chisel Drill Bit

7 11 12 Degree Tapered Chisel Drill Bit

The taper chisel bit is widely used in drilling holes with a depth size less than 5 meters and diameter scope in 20-45 mm bylight-duty hand hold drills, Like Y6, Y10, Y24, , major use in natural dimensional stone quarry for small hole drilling, block ‘strimming and 2nd splitting for small blocks.

To match hexagonal 22 mm and hexagonal 12 mm’s Tapered drill rod with 4, 6, 7, 11, 12 degree, all tapered chisel bit are made

with high quality of raw material through special heat treatment.