Sealey 3 piece power tool socket adaptor set sealey premier ak4929 manufactured from hardened and tempered chrome vanadium steel with 1 4 hexagon shanks ideal for use with all electric air drills suitable for repetitive applications which require 1 4 3 8 or 1 2 sq drive sockets features spring ball socket retention sealey ak4929 socket adaptor set 3pc power tool