Kobalt 20-Piece Standard (SAE) and Metric Combination Ratchet Wrench Set. This 20 piece ratcheting wrench set includes the following metric and SAE sizes: 6, 8, 10, 12, 13, 14, 15, 16, 17, 18 mm and 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16 and 3/4-inch. 12-point box end allows work on 6-point, 12-point, square, star and some rounded fasteners. 90-tooth ratcheting end provides 4° of arc swing. 19.25 x 11.75 x 1.45 inches. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Your feedback very important to us, after you get your package and you are. Satisfied with our service. If you have any problem with your order / any questions please before leave any type of feedback. Thank you for shopping at our store.