Use the spring with the valve spring tensioner from MSW The MSW-CA-123 valve spring compressor from MSW is the perfect helper to easily remove and assemble valve springs. With the automotive tool, you can remove the valve springs without having to remove the entire cylinder head. It is ideally suited for use on multi-valve gasoline engines and diesel engines. Add this automotive tool to your craft supplies today! Universal – suitable for gasoline and diesel engines Flexible – span adjustable from 35 - 200 mm Robust – solid, professional construction ensures durability and comfort when working Versatile – two valve pressure pieces with 17 mm and 21 mm for valve springs of different sizes Handy – ergonomic construction for a quick work