1Excellent Chrome Vanadium Alloy Rigid Material: This spline tip bit socket set is made of high quality chrome vanadium alloy steel, with high hardness, wear resistant and long service life. 2Accurate Manufacturing: This spline tip bit socket set is accurately crafted to ensure that the tip matches the tool, reducing the risk of wear and tear and damage. 3Storage Case: This spline tip bit socket set comes with a plastic storage case and has grooves in the case to store the batch heads, making it easy to organize and store and reducing the risk of loss. 4Multiple Sizes: This spline tip bit socket set has various sizes of bits in it, which can meet your different needs, very convenient. 5Wide Application: This spline tip bit socket set has a very wide application and is commonly used for all kinds of automotive repairs.