The RMA 510 gives homeowners the performance of a petrol-powered mower without any of the hassles. Enjoy instant starting, less noise, zero petrol costs and zero exhaust emissions. It features a 21" deck, so you can cover more lawn faster than previous models. The RMA 510 also includes a holding slot for a second battery, so you can swap batteries and be ready to cut again in seconds. It also features an adjustable handlebar, grass catcher and larger rear wheels for rough terrain. The Stihl RMA 510 is available as a skin only, batteries and charger need to be purchased separately.