12 Point Standard SAE Sockets 3/8 in Dr 9/16 in Opening Crescent 12 Point Standard SAE Sockets Drive Size [Nom]: 3/8 in Width [Nom]: 0.74 in Drive Type: 12 Point No. of Points: 12 Type: Socket Finish: Full Polish Chrome Wt.: 0.1 lb Opening Size [Nom]: 9/16 in Material: Alloy Steel Tip Type: 12 Point Measuring System: SAE Language: English Tip Size [Nom]: 9/16 in.