Lower steering column flexible coupling suitable for TR4-6. This is the later type which uses socket cap bolts rather than conventional hex head bolts. Originally two of these couplings were fitted to TR4-4A, we recommend changing this to the later TR5-6 system which only uses one. The flexible coupling fitted at the top of the lower column and the universal joint (145377) fitted onto the steering rack. The flexible coupling will require compressing in order to fit, do this with a Jubilee clip.