TEKTON 1/2 Inch Drive 19 x 21 mm Thin Wall Impact Flip Socket | SIF21921

Ideal for servicing cars, trucks, utility trailers, and more (requires at least a 3-inch impact extension) Each socket well is extra deep to provide increased engagement with lug nuts and clearance for decorative caps The outer diameter is 1 to 2 mm smaller than other TEKTON impact sockets, allowing for better access in tight lug nut wells Steep, 60-degree chamfered openings make it easy for the flip socket to slide over lug nuts Sizes are marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off Radiused corners prevent fastener round-off by applying force to a fastener's flat sides, rather than its corners Each socket meets a minimum of 1.3 times the ANSI/ASME standard for proof torque