... original material is Sinotruck material,Rubber core is polyurethane, Ball pin 40 contact material, high-frequency transfer of heat ... treatment process, the ball head shield is made of high-grade polyurethane, good ... Tongli tramcar (down)thickΦ60 5Tongli Ball joint of drag link (left)TL8603412003-1 Assort6Tongli Ball joint of drag link (right)TL86034120002 ...