Brunner and Lay 2 1/4" H Thread Standard Carbide Rock Drill Bit

Carbide rock bits have a longer service life compared to steel bits. Combine these rock drill bits with H-Thread drill steel for strong, smooth drilling. If resharpening cannot, or will not be performed, these bits are often the most economical type of bit. They are particularly suited for soft and nonabrasive conditions. Full size tungsten carbide inserts, which resist gauge wear and abrasion, makes this our most popular item. The design allows for multiple sharpenings and continued reuse until the inserts are consumed.