Feature: 1.The XZN/Triple Square bits in this set are made from heat-treated S2 steel alloy to withstand long-term use, the sockets are composed of Chrome-Vanadium to provide optimal strength and durability. 2.The pieces also have a chrome plating to prevent rusting and corrosion. 3.This set comes with a convenient blow-molded storage box for portability and protection. 4.These are perfect for use with breaker bars, torque wrenches and ratchets (not for use with impact tools). 5.They are compatible with most European vehicles. 6.This set meets and exceeds ANSI standards and comes with a lifetime replacement guarantee. Specifications: Item Color: Silver Storage Box Color: Blue Material: Chrome Vanadium Steel Socket Size: 1/4" Drive: M4, 5, 6 3/8" Drive: M8, 9, 10, 12 3/8" Drive Tamper Proof: M14 1/2" Drive Tamper Proof: M16-M18 Package Included: 10 metric XZN triple square spline bit sockets 1/4-inch drive: 4mm, 5mm, 6mm 3/8-inch drive: 8mm, 9mm, 10mm, 12mm, 14mm (tamper-proof) 1/2-inch drive: 16mm (tamper-proof), 18mm (tamper-proof) 1 x Hardshell storage case Attention: As we are replacing new packaging, you may receive new or old packaging. Please don't worry, the function of the product is the same. Thank you for understanding!