KNSh-110 pneumatic percussion drill bit
Heavy-duty pneumatic percussion drill bit designed for low-pressure down-the-hole hammers, such as the P-110 type. Used for drilling wells and blast holes in hard and medium-strength rock with Protodyakonov hardness f = 6–20. The forged body is made of heat-treated high-carbon alloy steel and fitted with tungsten carbide inserts.