BLACK+DECKER Removable Wheeled Deck for 12 in. Electric Straight Shaft Single Line 3-in-1 String Grass Trimmer/Lawn Edger/Push Mower MTD100 - The Home Depot
PAL Mowing System - Trim As You Mow
Source string trimmer attachment for riding mower / 3-point hitch string trimmer on m.alibaba.com