Features and Benefits Universal Spine works on 6 different fastener styles Complete 3/8" drive Fractional and Metric Set Standard and Deep 72 tooth Palm Control Ratchet head features compact head and 5 degree effective swing arc. Thumbwheel reversing mechanism enables easy change of direction while free-wheeling back plate application of steadying pressure without reversing. Wobble Extensions provide added accessibility by allowing a working angle up to 22 degrees at which to access fastener Made in America, Lifetime Warranty The Patented Universal Spline Design can work on spline, 6 point, 12 point, 50% rounded, female torx and square fasteners. Contains: 7.7 Fine Tooth Palm Control Ratchet; 3, 6 Wobble Extensions; 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8 Standard Sockets; 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8 Deep Sockets; 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Standard Sockets; 10mm, 11mm, 12mm, 13mm, 14mm, 15mm,16mm, 17mm, 18mm, 19mm Deep Sockets. Packaged in a molded plastic case. Made in the USA. Lifetime Warranty. SK SuperKrome products after 196 hours of Salt Spray Testing showed no corrosion when competitors products were covered with rust. Weight: 8.5 lbs.