Neiko Pro-Grade Locking Extension Bar Set - No More Dropped Sockets! for $19.99

Professional-grade 3/8"-drive extension bars with unique socket lock mechanism. Slide spring-loaded collar back, attach socket - stays on until you take it off. Works with any 3/8"-drive socket, shallow or deep, thin- or thick-wall. Heavy-duty hardened Chrome-Vanadium steel for extra strength. Set of the 3 most commonly-used extension bar sizes: 3", 6" and 10"