Goodson offers a wide range of valve spring compressors, including the pneumatic model No. PSB-5000, designed to work on virtually any multiple valve head and ideal for heads with recessed springs. A key feature is the pneumatic valve support that holds the valve closed as you compress the spring. Features include a head that adjusts 25 degrees in either direction, a table that adjusts 45 degrees to the front and 30 degrees to the rear and a foot pedal for hands-free operation. The unit ships fully assembled.