24 in the socket as shown more clearly in fig4 and has a portion protruding radially therefrom the sleeve has a pair of spaced apart internal annular grooves 25 and 26 formed therein in the normal position of the sleeve as shown in fig1 and 4 the ring is received within internal groove 26 in the sleeve the sleeve with the grooves therein may be formed by any suitable means such as machining rolling or investment casting also if desired the sleeve may be integrally molded from a suitable relatively hard plastic material in operation the sleeve 22 may be grasped and pushed forwardly on the socket 15 such that the sleeve compresses and rides up over the split ring 23 and such that the ring is received in the other internal groove 25 with a click or 34 snap action 34 the radial bores 19 and 20 are uncovered as shown in fig5 and the locking pin 21 may be removed thereby facilitating removal of the impact socket from the drive shank conversely when the socket or a different sized socket having the same input drive configuration is replaced on the drive shank and when the locking pin is again inserted therebetween the sleeve 22 may be manually retracted on the socket again with a 34 snap action 34 as the ring 23 is again seated within the internal groove 26 as shown in fig1 and 4 with this arrangement a two.