The E-Z Red Deep Reach Ratcheting Spline Set, No. RRW5 offers a 15-degree swing arc for hard-to-reach places. The stop ring ensures the wrench will not slip below the head of the fastener. This 72 tooth ratcheting system includes a quick change reverse lever, and high density foam tray. Universal Spline works on six fasteners: Torx, Square, 6-Point 50-percent Rounded, 12-point, 6-point and Spline. Includes sizes: 8mm x 10mm, 12mm x 13mm, 14mm x 15mm, 16mm x 18mm and 17mm x 19mm.