1.Well lubricated oil recycle system 2. High hardness 3. Deep hardened wear surface 4. Good quality bronze bushings A part of our productpart of our workshopOur main products are Track Roller, Top Roller, Sprocket , Idler, Track Link for various types of excavator and bulldozer, and all other kinds of spare parts like pin, bushing, high-strength bolt & nut, Link Bucket, Cylinder, Piston, etc.If ...