This new tool from Motion Pro is the fastest and easiest to use case splitter ever devised Includes 5 mm, 6 mm and 8 mm threads on puller studs to fit various engine case sizes Captured retaining collars in puller arms allow quick adjustment and setup Unique design makes it easy to center puller over crankshaft Grooved puller studs are fast and simple to install Includes molded tray for storage and organization. TOOL CASE SPLITTER V2