The Dewalt DCMPP568 is a versatile high performance cordless garden product for both professional and domestic use For safe use, there is a secondary two-stage trigger that prevents accidental actuation. A flap needs moved to allow the safety grip trigger to be pressed, to allow the main trigger to be pressed. The blades are coated in a non-stick material that prevents sap from gumming up the blades and attracting more dirt and debris. Once a blade has reached the end of its usable life, replacements can be ordered. If you use this tool with a 5.0 Amp-hour battery pack, you can expect to get 1,000 cuts on a single full charge, meaning one battery would allow an enthusiast to go all day, and just a few batteries could be all a professional arborist or landscaper would need for their.