characteristic: and labor-saving socket wrench. The side design of the inner hexagon adopts a newly designed hollow half angle, which can effectively fix the bolt, and the tight-fitting nut with angle is not loose. Products are made of high-quality carbon steel, with thick material, high hardness, more wear resistance and durability. The polished of the product is beautiful and not easy to rust. Used for automobile maintenance. describe: Name: sleeve combination tool set Quantity: 1 set Material: carbon steel colour: silver Package Contents: 1 x Sleeve combination tool set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.