Ryobi RY51932 Gas Powered 18 in. Straight Shaft String Trimmer ZR51932 (Certified Refurbished) This Certified Refurbished product is tested & certified by Ryobi to look and work like-new. The product includes all original accessories, and is backed by a 1 Year warranty. provide balanced movement for less vibration and longer engine life Split-shaft coupler allows you to interchange your trimmer quickly and easily Compatible with Expand-it attachment tools