Capri Tools 1/2 in. The 1/2 in. Drive Deep Impact Socket Set is a collection of most frequently used 1/2 in. 18-piece set includes (18) 1/2 in. drive deep impact sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 mm.