37 pieces 1/4 and 3/8in. drive socket set Drop forged Heat treated chrome vanadium steel Ideal for automotive applications and others 9 x 1/4in. drive metric sockets 9 x 1/4in. drive A/F sockets 9 x 3/8in. drive metric sockets 7 x 3/8in. drive A/F sockets 2 x 1/4in. socket accessories 1 x 3/8in. socket accessories