model:S36-722--S70-724 dia:36--70 material:hard alloy steel taper:7 Brand KAIYU cross bit 1.model:S36-722--S70-724 2.dia:36--70 3.material:hard alloy steel 4.taper:75.The percussion bits are made from high grade hard alloy and special steel. These percussion bits are widely used in metallurgy mine, geological exploration, water and electricity, traffic tunnel quarry and so on. Kaiyu cross bit