"USER FRIENDLY DUAL DRIVE SOCKET. Dual drive feature allows you to turn socket using either a 3/8’’ drive ratchet for the internal drive or a wrench for the external drive","EASY SOCKET PLACEMENT. Features patented spark plug retaining tab system as well as magnetic inserts","EASY ID. 6-point sockets are single knurled and for easy identification","GET A GRIP. Knurling on socket body provides grip when turning by hand","QUALITY CONSTRUCTION. Made of heat treated Cr-V with chrome plating and is 150% ANSI torque specification","MULTIPLE APPLICATION READY. Ideal for use in a variety of domestic and imported cars 3/8" DRIVE 5/8" SAE 6 POINT 3½" LONG UNIVERSAL SPARK PLUG SOCKET WITH RETAINING TABS BDU20RSP6 | Matco Tools