I bought one of the proto holders to replace a set of car spark plugs that had lost the socket in one of the deep engine compartments could. Quality tool with a lifetime guarantee, made in America. If a bushing is stuck, it cannot fail until you retract the collet. This applies to all sockets I own including Snap-on, Craftsman, Matco, Mac and a few other brands. I liked it so much I bought a full set of 3/8" and 1/4" pulley extensions. Anyone who appreciates quality tools will not be…