Socket openings are designed to reduce fastener roundingChrome vanadium alloy steel construction for strength and durabilityPolished nickel chrome plated finish resists corrosionFeatures high torque quick release ratchet72 gear teeth for 5 degree sweepSmaller head for tight areas1pc each spinner handle, universal joint and 3" extension bar10pc standard SAE socket sizes: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16" and 1/2"6pc Deep SAE socket sizes: 7/32", 1/4", 5/16", 3/8", 7/16" and 1/2"10pc standard mm socket sizes: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm and 13mm6pc deep mm socket sizes: 4mm, 6mm, 7mm, 8mm, 10mm and 12mm