New 10pc Valve Spring Compressor Tool Kit for Car Motorcycle Petrol Engines AUDESCRIPTION This professional quality valve spring compressor tool set is ideal for use on cars, vans, small marine engines and most motorcycle engines. The various sized adaptors makes this set one of the most versatile on the market as it will remove and compress springs on most cylinder heads. This set allows you to correctly fit the valve springs as it makes it easier to compress the springs. Contents 5 x open sided adaptors: 16mm, 19mm, 23mm,