Brunner Lay Standard Carbide HThread Rock Bit

Full size tungsten carbide inserts, which resist gauge wear and abrasion, makes this a very popular item. The design allows for multiple sharpenings and continued reuse until the inserts are consumed.

• Drive bit type: H-threaded
• Standard outside diameter: 1-3/8", 1-5/8", 1-3/4", 2", 2-1/4", 2-1/2"
• Material: Tungsten carbide (insert)