This tool set includes 12 adjustable wrenches and 1 auto adjustable wrench. Adjustable wrenches are drop forged from alloy steel bar. These wrenches are available in lengths from 6 in to 24 in and with maximum capacity ranges from 3/4 through 2-7/16 in. Available in cobalt or industrial black finish. These are very convenient general purpose, utility, single end hand tools with 22-1/2 deg angled adjustable openings. Martin Wrench Set, 13 Piece, Specifications: 22-1/2 deg Angled Adjustable Opening, Forged Alloy Steel, Cobalt/Industrial Black