Description: SAE Sizes : 3/8″x7/16″, 7/16″x1/2″, 1/2″x9/16″, 9/16″x5/8″, 39/64″x11/16″, 5/8″x3/4″, 11/16″x13/16″, 47/64″x7/8″, 13/16″x15/16″, 55/64″x1″, 15/16″x1-1/16″, 1″x1-1/8″, 1-1/16″x1-3/16″, 1-3/16″x1-5/16″ Metric Sizes: 10-12mm, 12-14mm, 14-16mm, 15-17mm, 16-18mm, 18-20mm, 20-22mm, 22-24mm, 25-27mm, 28-30mm, 30-34mm, 32-36mm, 35-40mm, 38-42mm, 39.5mm, 44.5mm, 50mm, 59mm, 63mm, 65mm, 72mm, 76mm, 81mm Key Features: .