Trimmer Plus LE720-Lawn Edger Attachment-Multi Brand Compatible-41BJLE-C902.The 7.5-inch steel edger blade provides a blade depth of 2.5-inches for more precise edging and cutting. Connects to attachment-capable trimmers, including Troy-Bilt, Remington and Craftsman and moreThe adjustable blade reaches depths up to 2.5 inches and the angle of the boom allows the user a clear and easy viewing path.Constant torque gearbox is rugged and durable. Note-lowering the wheel will decrease the cutting depth. Raising the wheel will increase the cutting depthWheel diameter is 3.75 inch. Warning-do not use this attachment with an electric or battery-powered unit. Doing so could cause the motor to overheat, resulting in damage to the unit and possible personal injury