Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools. This new tool from Motion Pro is the fastest and easiest to use case splitter ever devised! Unique design makes it easy to center puller over crankshaft. Grooved puller studs are fast and simple to install. Captured retaining collars in puller arms allow quick adjustment and set up. Durable tool steel body with protective black finish. Billet 6061 aluminum arms with blue anodized finish. Includes 5, 6 and 8 mm threads on puller studs to fit various engine case sizes. Includes molded tray for storage and organization.