Safety is built into the reliable Powerbuilt Strut Spring Compressor. A specially designed tool for safe easy removal and installation of coil springs by helping resist misalignment and jamming of McPherson-style struts. Forged steel spring hooks and heat-treated screws make this spring compressor strong enough for a lifetime of use. The included safety bars on the hooks allow for a safe and worry-free spring compression every time by preventing the spring from slipping off and damaging related components. Kit includes a heavy-duty carry case with usage photos and detailed instructions.