Features and Benefits:�3 in 1 Square Design for Single-Sided Fastening�Debris Shield - to resist interior rust and corrosion from dirt, wood chips and moisture on the jobsite�Designed for the installation and removal of hardware on utility poles�For use with 1-1/8", 1-5/16" and 1-1/2" square nuts�For use with 3/4", 7/8" and 1" Square Headed Machine Bolts�Includes 2 Pieces�Includes 7/16" Hex to 1/2" Square Adapter for use with 7/16" quick connect chucks�More Secure, Efficient Fastening�Push and Twist Barrel Lock for secure, one handed size changes.�Socket features a 1/2" Square DriveThe SHOCKWAVE™ lineman's 3-in-1 transmission utility socket provides more secure, efficient fastening in all fastening environments and orientations. The socket features a 3-in-1 square design for single sided fastening, eliminating the drop hazard of removing the socket from the adapter to change sizes. The push and twist barrel lock allows for secure, one-handed size changes, even while wearing gloves. The socket features and interior debris shield that resists interior rust and corrosion from dirt, wood chips and moisture from the jobsite.