Made of steel material with high hardness and toughness, and the plating is resistant to oil and rust, so it can be used for a long time without deformation or slippage This 10 piece set includes sizes from 10mm to 27mm and is designed to fit a variety of automotive nuts, including oxygen sensors, brake lines, oil line connectors, and more Includes storage case to safely organize tools and facilitate transport and access for transport repairs or store storage Equipped with both 3/8" and 1/2" square drive interfaces, suitable for ratchets and wrenches and versatile use in professional workshops and projects The side slots allow you to insert directly into the threaded nut using the supplied tube, eliminating the need to cut, damage or bend pipes during maintenance, Manufacturer: Lerpwige