Brand: Proform Parts Manufacturer's Part Number: 66764 Part Type: Valve Spring Compressors Product Line: Proform Professional Heavy-Duty Valve Spring Compressors Summit Racing Part Number: PRO-66764 UPC: 037995667642 Valve Spring Compressor Usage: Cylinder head off Valve Spring Compressor Material: Steel Valve Spring Compressor color: Gray/Silver Handle Length (in.): 12.00 in. Quantity: Sold individually. Proform Professional Heavy-Duty Valve Spring Compressors Proform Professional heavy-duty valve spring compressors can make short work of installing or removing valve springs. Designed with the cylinder head expert in mind， these manual compressor tools are loaded with new premium features， and are by far the most affordable stud-style compressors that will easily compress nearly any spring!Proform Professional heavy-duty valve spring compressor features include: * Removes and installs valve springs (with heads on or off engine)* Reinforced adjustable arm slides， employing a locking pin for rapid， easy operation* Box steel reinforced gussets * Aluminum spring cup inserts for better alignment * Reinforced compression-hold handle* Reduces cylinder head disassembly/assembly time by more than half* Works with Chevy small block， big block， Ford， and Pontiac engines