High-Quality Materials: This socket wrench set is made from premium chromium-vanadium alloy steel, with heat treatment and a matte finish, offering excellent strength and wear resistance Product Contents: WORKPRO ratchet wrench set includes 10 sockets in the following sizes: 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, and 13 mm. The total weight is approximately 156 g. The bit holder is made of new PVC material, weighing 170 g and measuring 81 mm in length. The 30 Pcs bit set includes: Flathead: 4, 4.5, 6.5, 7; Phillips: PH1, PH2, PH3; Pozidriv: PZ1, PZ2, PZ3; Star: T8, T10, T15, T20, T25, T27, T30, T40; Hex: H6, AD. Star bits with holes: TT10, TT15, TT20, TT25, TT27, TT30, TT40; Hex: H3, H4, H5 1/4" Double-Head Ratchet Handle: This rachet set includes a double-head short ratchet handle with 72 teeth. The handle weighs 116 g and measures 120 mm in length and 26.8 mm in width. The handle shaft has a diameter of 12.8 mm and is made of high-quality alloy steel. Both the 1/4" hex bit and 1/4" square drive ratchet head have undergone high-strength heat treatment for durability Quick Release Mechanism: This socket bit set features a durable quick-release connector made of aluminum alloy and stainless steel, measuring 60 mm in length and weighing 26 g. The hex handle is crafted from high-quality, heat-treated carbon steel for superior hardness and durability. It also includes a strong magnet with a torque capacity exceeding 17 Nm for secure and efficient bit retention Portable Design: The ratchet tool kit comes with a plastic tool case, weighing only 116 g. It’s easy to store and retrieve. Whether for woodworking, construction, or automotive repairs, the portable design is perfect for various applications