[Flexible to Use] The sturdy tool comes with a rotary switch For flexible use. It is labor-saving and can long used without fatigue. This tool is convenient to use.[Practical Tool] This valve spring compressor is designed to quickly remove the valve spring without removing the cylinder head. The good structure makes it easy to clamp and compress.Universal design fits most cars and light trucks.Offset jaws easily grip and compress valve springs.Dial adjustment for fast, accurate setup.Oxide finish to resist rust.Material:Plastic+MetalPackage Contents:1 * Valve Spring Keeper Tool