1、HARD MATERIAL: Ratchet wrenches are made of chromium vanadium alloy steel processing, the product integral adopt heat treatment, possess high hardness, high torsion, and good toughness 2、SPACE SAVING: The spanner adopts 72 teeth ratchet wheel, which only needs 5° for one rotation, convenient for barrier free use in narrow space 3、SMOOTH SURFACE: Ratchet wrench set is smooth and flat, with thick body, no burr, not easy to wear 4、APPLICABLE SCENARIO: Metric ratchet wrench set is widely used to tighten or remove hex bolts or nuts 5、RUSTPROOF ROD: The surface of the wrench rod after finishing electroplating treatment, beautiful and not easy to rust Item Type: Ratchet Wrench Set Material: Chromium vanadium steel Specifications: Approx. 8mm / 0.31in 10mm / 0.39in 12mm / 0.47in 13mm / 0.51in 14mm / 0.55in 17mm / 0.67in 19mm / 0.75in 7 x Ratchet Wrench 1 x Storage Box