CSTFE…UK series ball-joint ends with grease nipple are built in C45 steel, (galvanised), with ISO 12240-4 compliant internal threading, E series, M type. The ball joint has a steel coupling on sintered bronze containing PTFE. They do not require lubrication. Application sectors for normal operating conditions (unilateral load and alternated to a limited extent – slow movement for small to medium oscillation angles).