Pass Thru spline socket set with 3/8 in ratchet, pass-thru system works over long threaded rod where normal ratchets and sockets won't fit; every pass-thru socket replaces one standard and one deep. Sizes included SAE: 3/8 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16, 3/4, 13/16 in and 7/8 in, MM: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 17 mm, 18 mm, 19 mm.

Manufactured from chrome molybdenum alloy steel (CR-MO) for better strength and longer tool life
Off-corner loading technology to virtually eliminate fastener rounding
Size markings stamped for quick size identification