... of steel to steel, steel to liner or steel to injection is optional,More detailed specifications in our catalogue is available ... inserts+ball, out ring +liner(PTFE/DU)+ball, out ring +injection+ballRod end:body+ball, body+two ring inserts+ball, body ... +liner(PTFE/DU)+ball, body+injection+ball, body+radial spherical plain bearingMaterial specification:Ball (inner ring ...