Draper Expert Fully Insulated VDE Socket Range - Draper Expert 31953, Expert Quality, 6 point sockets manufactured from chrome vanadium steel hardened, tempered and chrome plated. Tested to 10,000V for safe 1000V AC or 1500V DC live working. Sold loose. Draper Expert 31953 1/2" Sq. Dr. Fully Insulated VDE Socket (23mm)