Apex®, M-1110, Socket, Magnetic, Yes Impact Rated, Measurement System: Imperial, Square Drive, 1/4 in Drive, 6-Point/Hex Socket, 5/16 in Socket, 1 in Overall Length, 7.2 mm Opening Depth, 1/2 in Drive End Width, 1/2 in Socket End Width, 6 Points, Standard Style, High Carbon Alloy Steel