Grip-Tite 17 Pc SAE Socket Set. Includes: 8 Deep Sockets: 3/8, 7/16 , 1/2, 9/16, 5/8, 11/16, 3/4, & 13/16. (5/8 thru 13/16 deep sockets work great for spark plugs) & 7 Standard Length Sockets SAE Sizes: 3/8, 7/16. 1/2, 9/16, 5/8 ), 11/16 & 3/4. Also Includes 3" Chrome Vanadium Extension, Rugged Teardrop Quick Release Ratchet & Case. 12 per case.