The 97-pc 1/4", 3/8", 1/2" Drive Bolt Biter Mechanics Tool Set, No. GWMSBBS02, from GEARWRENCH comes in a foam storage tray that is chemical and solvent-resistant, and designed to fit in a wide range of tool storage systems. The foams are in contrasting orange and black with hi-vis size markings for easy identification. A tapered entry enables the socket to easily siton a damaged fastener. The dual-sized sockets are designed to work with both SAE and metric fasteners, and have a black oxide finish to resist corrosion. The 90-tooth ratchet included delivers a 4 degree swing arc to turn a fastener in tight spaces.