156 is biased into engagement with the outer end of the recess 158 by the biasing member 120 which is located in the locking sleeve 118 and engaged between the bushing 114 and the guide portion 150 of the release collar 122 between the biasing member 120 and the ring 156 the guide portion 150 includes a number of apertures 162 within which are disposed ball bearings 164 though the bearings 164 can have alternative shapes as well such as pins cylindrical rollers or wedges among others the apertures 162 are formed similarly to the openings 134 in the socket 112 to receive and retain the bearings 164 therein the size of the bearings 164 is such that when the apertures 162 and the bearings 164 are aligned with the larger diameter section of the passage 144 the bearings 164 extend outwardly from the guide portion 150 into contact with the surface of the passage 144 as the biasing member 120 urges the collar 122 and guide portion 150 outwardly from the passage 144 the bearings 164 contact the inwardly tapering section of the passage 144 and are urged inwardly through the apertures 162 in this position the bearings 164 can engage the portion of the shaft 108 positioned within the passage 151 as best shown in fig1 the bearings 164 can engage the exterior surface of the shaft 108 directly or can engage a peripheral groove 109 formed in the shaft 108 when a shaft 108 of a.