This Armstrong 30 Piece 1/2" Drive 12 Point SAE Standard and Deep Mechanics Tool Set includes a ratchet that has a compact head design, recessed reversing lever with On/Off markings, unique "hour glass" handle design, as well as the torque wrap design incorporating a 10 degree ratcheting arc. The sockets incorporate a radius corner design that engages the flats of the fastener as well as a unique rentention method, cold form ball recess, which provides consistent secure retention of the socket to the drive tool. EYE-D™ markings on the sockets optimize size visibility, also providing SAE / Metric differentiation. Knurling on the extension shaft provides a non-slip grip to quickly run down / remove fasteners. All tools are manufactured from high alloy steel using the most up-to-date manufacturing process and heat treat for greater strength and durability. Meets of exceeds ASME and US Federal specifications. Comes with a durable, long lasting blow molded case that will not dent or rust even under the harshest conditions. Two piece latches securely hold the box closed while foam inserts securely hold all tools in place. Black top foam with blue foam underneath that has socket sizes cut into the foam for easy identification of a missing tool. The bottom half of the case with the foam insert or the foam insert itself can be removed and placed in a tool storage door for organization.