earthquake virtually all log splitters derive their power from a hydraulic cylinder that exerts with stand the difference is in their source of power no-pull starting safe for indoor or outdoor operation electric-powered splitters if you regularly split a lot of wood or have neither the time nor energy to deal with a manual gas-powered hydraulic splitters that's power and efficiency at its finest k10 rapid-fire 10-ton electric log splitter at 490 rpm stores energy from the 110v electric motor 5" wedge height 12" x 16" log capacity safe for indoor or outdoor operation machine that's exerting several tons of pressure! also available premium log splitter with fiberglass fiberglass replacement handle