Detailed Product Description Ruizuan"brand rotary bits can be suitable for Bauer,Cat,Sany,Yutong,Foton Lovol and Zoomlion machines.We use high grade alloy steel and tungsten carbide tip and adopt advanced brazing technology to produce high quality,high wear resistance,long life cutters.We also can produce all kinds of rotary bits,trenching bits,diaphragam wall cutters,big diameter bushing bits ...