The Jcb Bush Part No-176 has soft outer surface and hard inner surface with grooves with tribromo coating on the inner grooved surface of bush. Pin has ability to withstand impacts, absorb shocks & does not deform. They are made from high quality chrome alloy steel with accurate and matching dimensions. Jcb Bush Part No-176 ensures maximum performance and safety It is easy to overlook how important these relatively simple components are to the smooth functioning of a machine.