Gently, evenly works top dressing material into the greens.Extension available for bigger jobs. Hinged and weighted to manage contours.Replacement brushes priced separately.Two (2) are needed for drag brush.Four (4) are needed for extension.Standard Golf - DRAG BRUSH-Product DetailsDRAG BRUSH SIZE (HxW) : 66 x 138 (cm.) Type Code Drag Brush Only 52000 Single Replacement Brush 52013 DRAG BRUSH EXTENSION SIZE (HxW) : 66 x 68 (cm.) Type Code Drag Brush Extension (Set of 2) 52050 Single Extension Replacement Brush 52063 ASSEMBLY MANUALhttps://drive.google.com/file/d/183Ucvs8BVDtN42WEAaKFDMXW5uu140F2/view?usp=sharing EXTENSION ASSEMBLY MANUALShttps://drive.google.com/file/d/1hjhPSsKPTXRUVG7UEuC6rzSt3ipt54Zp/view?usp=sharing