Description Sturdy, black phosphated carbon steel construction. For installing and removing valve springs in small engines. Contents: Spring compressor with three pressure screws, five pressure pieces in 16, 19, 23, 25, and 30 mm, as well as a metal pin and a screw clamp. Supplied in a robust storage case. Product Features Sturdy, black phosphated carbon steel construction For installing and removing valve springs in small engines Contains a spring compressor with three pressure screws, five pressure pieces in 16, 19, 23, 25, and 30 mm as well as a metal pin, a screw clamp, and a robust storage case.