Mechanics Time Savers (MTS381) 3/8 in. Drive Universal Magnetic Red Socket Holder 10-19mm Originally designed to hold a standard 8-piece universal (swivel) socket set, this organizer will Use it to organize: long and short chrome flex sockets, hex heads, flat tips, phillips tips, torx Accommodates 3/8 thru 3/4 SAE and/or 10 thru 19 mm. Standard red Great Gift Idea.