Snap-on 20 Pcs Impact Socket Set 1/2 Drive Deep Standard IM SIM 6 Point Holders
The deep well sockets are from the SIM Series and are sized and numbered as follows: 1" - SIM320; 15/16" - SIM300; 7/8" - SIM280; 13/16" - SIM260; 3/4" - SIM240; 11/16" - SIM 220; 5/8" - SIM200; 9/16" - SIM180; and 1/2 - SIM160.