The Vessel 11-pc 2 Way-Speed L-Handle Set, No. SLH21U includes five 1/4" square sockets (8mm, 10mm, 12mm, 13mm, and 14mm) and five 1/4" hex bits (+1, +2, +3, SL4, and SL6). The long handle allows for powerful tightening while the smooth rotating sleeve allows quick turning. The set includes a push or pull collar to attach to a bit or socket that allows for a 15-degree tilt.