TEKTON 3 8 in. Drive Universal Joint Socket Set (7 Piece) SHD91118 Draper 3 8 inch Drive Universal Joint 3 8 Inch Drive Universal Joint Socket Set, 10 Piece (10 19 mm) USA 3 8" Drive Universal Joint (1 Pkg.) AFT Fasteners. Draper 3 8 inch Drive Universal Joint. The universal joint socket combines a shallow 6 point socket and compact universal joint for a tool that's even smaller than a typical socket and universal joint used together. The condensed size and flexibility of the u joint socket allows you to reach around obstructions and access extremely tight, limited spaces when other tools can't fit. Features: 10 pc. 3 8 in. drive 6 point u joint sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm Socket rail