Wera 17 Piece 3/8-inch SAE Set features the New Wera Zyklop Ratchet, which combines 5 ratchet types into 1 robust tool. Swivel head has defining lock points at 0, 15 and 90 degrees left and right, preventing the head from slipping, for reliable and safe working. Combination of freewheeling sleeve and rotating mass design turns nut or screw with unbelievable speed at 0 degree position. Add adaptor and bit and ratchet can be used as conventional screwdriver. Features easily accessible thumbwheel that reverses direction easily in any position. Sockets feature distinctive knurling for easy manual tightening. Premium extensions are fitted with Wera's flexible lock system preventing slipping or accidental disconnection and loss of tool. All Wera hand tools feature the trademarked ergonomic Kraftform handle, with hard and soft zones, that fits the shape to the hand for the ultimate in comfort and high-speed torque transfer. Limited Life Time Warranty. Set includes 3/8-inch drive Zyklop Ratchet, Sliding T-handle, 5-inch and 8-inch Extensions with Freewheel Sleeve, Universal Joint, 1/4", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" Sockets. All sets come in rugged steel case with removable dual color foam insert and laser identification guide on inside panel to ensure proper placement of tools. Wera - The Best Tools For The Job!