30392 is a 31 piece, ratcheting wrench tray set (SAE and metric). It has a 12-point box-end design with contact points that apply force to the flat sides of the fastener head rather than the corners to prevent the fastener head from rounding off. The open-end is angled 15 degrees for flipping the wrench between rotations to maximize rotations and the box-end offset 15 degrees for finger clearance and working around obstructions that limit access to the fastener. It consists of premium-quality tool steel, have a Chrome-plated satin finish for corrosion protection, and the size profiles are boldly stamped on the handle for easy identification. It comes conveniently stored in a soft modular foam tray for secure, space-saving storage. It is designed with high visibility tool callouts printed on each tray to easily return tool to its location. It is made of durable laminated tri-layer foam and will fit in most toolboxes and pull out tool drawers.