4″ DIA. with D.W. Shank – RH-3400

Description

4″ DIA. with D.W. Shank – RH-3400

These Heavy Duty Rock Heads are designed for drilling holes in hard clay, shale, hardpan, sandstone and root impregnated areas. The cutting faces and edges are coated with tungsten carbide impregnated hardfacing material for maximum durability. The tool bodies are manufactured from chrome-moly tool steel, and the carbide cutting blades are made in the USA.

**For maximum performance and bit life, use these bits with a Lead Auger to remove millings from boring.