Description：1. Heat treated chrome vanadium alloy steel drop forged provides long life durability.2. Polish chrome finish for corrosion resistance.3. Two different sizes, allow you to easily tighten or loosen more bolts just by flipping the wrench over.4. The 12-Point box end provides strong gripping to tighten or loosen bolts without round-off, it won't slip even under high torque.5. 72-tooth mechanism allows you to work in the narrow space with a 5-degree ratchet movement.6. Widely used in industries as repairing and maintaining, machinery, electric power and household. Specification:Double End Size: 8mm x 10mmTotal Length: 138mm / 5.43"Material: Chrome Vanadium Steel (CR-V)Finish: Chrome Plated, PolishingColor: Silver Tone, BlackPackage Content:1 x Double Box End Ratcheting Wrench.