[Fitment]Engines Spring Compressor widely applicable to OHV,OHC and CVH engines,but not suitable for use on engines with deep seated valves [Metal Material]Spring Compressor Tool is made of high grade polished alloy steel,rust resistant and durable [Easy to Use]Spring Compressor can easily remove and install valve springs without removing cylinder head from motor [Size Information]total length about 24cm/9.45inch,total width 13cm/5.12inch,maximum opening 13cm/5.12inch [Application]Overhead Valve Spring Compressor Removal Installer Tool works on dual springs,inner,and outer springs, Weight: 1.6975594174 pounds, Manufacturer: YIXANNX