yup that's a lime spreader made for bulk ag lime I have two of them, 1 eight footer and one 5 footer. Works great for lime, never seen a v shaped spreader tat would spread ag lime. Also work for spreading fertilizer if you don't want to sling it out into the woods along narrow trails and such...
My drill is 6' wide (planter box) with the 3 pt conversion it works great for trails and little hunting plots. Not sure if I have any pics, but will look. Planters put away in shed but might be able to snap a couple tomorrow