PREMIUM MATERIAL- The differential spreader is constructed with heavy-duty steel with the red powder-coated finish for long life and extremely durable. DAMAGE PREVENTION- Differential housing spreader helps prevent the component damage that often results from the use of homemade devices. HEAVY DUTY TOOL- Weight is 38lb; Dimensions is 18.5' x 4.7' x 3.5'. The heavy-duty device using mechanical screw power to spread the housing. CONVENIENT TO USE- Axle housing spreader makes removing and installing differential ring-gear assemblies a whole lot easier. WIDE APPLICATION- This tool simplifies the work of removing or installing differential ring-gear assemblies on Dana axle models 30 through 80.