This expert quality socket and bit set is manufactured from chrome vanadium steel, correctly hardened and tempered. The six-point sockets are chrome plated for corrosion protection. Supplied inside a soft grip injection plastic storage case. The set includes a 72-tooth reversible ratchet, spinner handle, extension bars, universal joint, and a 1/4" hex to 1/4" sq. dr. adaptor. It contains 9 sockets (4-12mm) and 24 screwdriver bits (Plain slot, PH-type, PZ-type, TX-STAR, and Hex).