Road Milling Bit For Cutting Asphalt Bit And Concrete Road We can supply all kinds of road planing bits,sleeves,and holders which have hign strength,hign wear resistance and long life features.They are widely useing on excavation machines,shearers,continus mines etc.1. Trenching Bit Trenching bits for trenching beside the road Kennametal Code is like RL08, RL09, RL07 etc.. 2. Road Planing bits ...