The database holds 14 grapple models from 4 manufacturers, including Land Pride, Titan Attachments, Frontier, Bush Hog. Working weights run from 310 to 1150 lb, and no model in this class is PTO driven. 9 are rated by the manufacturer for sub-compact tractors. Each record lists hitch category, PTO speed, working width, and the manufacturer document the figures were read from, with the date that document was last checked. Open any model to see which of the tractors in the database fit it, and which specification rules the rest out.