Function: Removal and install coil springs, shock absorbers, struts, and spacers efficiently with auto coil spring compressor tool set Features: Many coil spring compressor tools slip and buckle under high tension, heavy duty spring compressor tool bears 1200 kg maximum capacity per pair Security: Guard bar adjusts from 8 to 11.7 inches (20.3-29.7 cm) and accidental pressure release while you work with strong, powerful springs; Suspension spring tool hook jaws are slanted and have locking mechanisms for increased security Wide Application: Automotive coil spring compression tool brackets feature hook jaws that can extend from 1.4 to 11 inches (3.6 to 27.9 cm) to fit your cars, trucks, motorcycles, ATVs, and other larger vehicles Note: The tool can hold the spring tightly by rotating the easy to use hexagonal nut. Use 19 mm hex socket or wrench. Always grease threads before use to avoid stripping The macpherson strut spring compressor takes tension off to removal strut and spring assembly. Quickly and compresses the coil spring for replacing a shock absorber unit or spring as well as allowing easy repairs on bent struts, strut tubes, and damaged pieces. Features forged construction, acme threaded rod, and built-in detent pins. Broad spring and built in detent pins lock the spring into place for spring compression. Acme threaded rod allows for and smooth compression of springs both on or off the vehicle with hand or power tools. Forged hooks and center screw hardened for extreme strength and long life. Note: Lubricate threads with compound for prolonged life