66784 Stud Mount Valve Spring Compressor Tool Valve Spring Removal Installer Tool Compatible with All 3/8'' & 7/16'' Rocker Studs

【Compatible With】3/8" and 7/16" rocker studs 【Function】Specially design for compressing valve springs on cylinder heads. Helps easily and quickly replace valve springs 【Instructions for use】Simplifies between-rounds valve spring changing. Easily and quickly replace valve springs, remove valve spring from an assembled engine for checking or replacing, quickly and easily press down to compress coil spring then remove valve keepers. 【Spring Compressor】66784 valve spring compressor consisted of two parts: a 12-inch steel leverage head and a 9-inch metal bar with a smooth rubber handle. These two parts are detachable, and designed to provide enough leverage pressure to compress the valve spring 【Warranty】1 Year Quality Guarantee. If you are not satisfied with the product, please contact us via Amazon Message, and we will reply within 24 hours and help solve the problem