1/2-Inch-Drive Impact Socket Set, 6 Pieces CR-MO Flip Socket Set, Non-Marring & Thin Wall Lug Nut Socket Set for Car, SAE and Metric Sizes Features: Premium Material: Each lug nut socket is made of high-strength CR-MO, durable and corrosion-resistant. Dual-End Flip Socket: The wheel nut socket set includes Metric sizes (17 - 19 - 21 - 22 mm) and SAE sizes (3/4" - 13/16" - 7/8" - 15/16"), effectively giving you eight lug nut removal tools in one set, offering great value for money. Non-Marring Socket: Each socket features a removable nylon protective sleeve to prevent damage to aluminum wheels. If the lug gap on certain modified vehicles is too small, the sleeve can be removed. Thin Wall Design: This wheel socket set features a thin wall design that is thinner than an ordinary socket, allowing for access in tight work areas. What You Will Get: This set comes complete with 4pcs socket (17 X 19mm, 21 X 22mm, 15/16" x 7/8", 13/16" x 3/4"), 1pc extension bar, and 1pc knock-out pin. The storage case keeps your tools organized and easily accessible and protects your tools from damage. Specifications: Item Name: Lug Nut Socket Set Main Material: CR-MO, Nylon Drive System: 1/2-Inch Drive Color: Blue Package Information:  Package Size: 22*15*5cm/8.66*5.91*1.97inch Package Weight: 1320g/2.91lb Package List: 4 * Socket 1 * Extension Bar 1 * Knock-Out Pin 1 * Storage Case