Black & Decker ST7700/ST7000 Automatic String Trimmer 13 Inch: Electric String Trimmer (028877592046-1)
BLACK+DECKER LST300 20V MAX Lithium 12 in. Trimmer/Edger - Walmart.com
Amazon.com : BLACK+DECKER String Trimmer with Auto Feed, Electric, 6.5-Amp, 14-Inch (BESTA510) : Patio, Lawn & Garden
BLACK+DECKER 14 in. 7.5 AMP Corded Electric Curved Shaft 0.080 in. Single Line 2-in-1 String Trimmer & Lawn Edger with Automatic Feed GH3000 - The Home Depot