Hydraulic actuated Log Splitters are generally designed for mounting on the 3 point linkage of a tractor. Most log splitter models for home use have a rating around 10 tons, but professional hydraulic models may exert 25 tons of force or more. There are also manual log splitters, which use mechanical leverage to force logs through a sharpened blade assembly and screw or 'corkscrew' types that are driven directly from an agricultural tractor's power take-off shaft where the splitter is mounted on the three point linkage.