heat-treatment carbon steel make it qualified for hard-work. Moil Point ApplicationType(Chisel or Point)B47108×Φ25×400108×Φ25×450108×Φ25×500B67C,B87C,B90Φ28×500Φ28×600Φ32×500Φ32×600G7Φ28×Φ26×400Φ28×Φ26×450Φ28×Φ26×500G10Φ24×Φ25×350G20Φ30×Φ30×400Φ30×Φ30×450Φ30×Φ30×500