CTA Tools 2233 Parallel-Lift Valve Spring Compressor Services Springs with Diameters Measuring 1-Inch to 2-Inch (25-Millimeter to 51-Millimeter) For Vehicles with L-Head and Valve-in-Head Engines Compressor is 10-Inch (25-Centimeter) at the Opening and 10-Inch (25-Centimeter) in Depth Includes Services Springs with Diameters Measuring 1-Inch to 2-Inch (25-Millimeter to 51-Millimeter) For Vehicles with L-Head and Valve-in-Head Engines Compressor is 10-Inch (25-Centimeter) at the Opening and 10-Inch (25-Centimeter) in Depth Includes Both, Offset and Straight Adjusting Jaws "Parallel-Lift" Design Prevents Bending of Valve Stems