The Elora 770-S4 Extension Bar 3/4" is a versatile and reliable tool designed to increase the reach of a socket set and gain access to awkward fasteners. Its chrome vanadium alloy construction ensures maximum durability and its chrome plating ensures optimal corrosion resistance. The 770-S4 has a slender profile and a 3/4" drive size for a secure fit. This extension bar is ideal for any job requiring an extended reach.