Weed Warrior Autowinder II Universal Fit String Trimmer Replacement Bump Head Auto Winder II Replacement Trimmer Head, Eliminates Tangled Spools With Easy Feed Technology, For Easy Line Changes, Simply Insert The Line Crank The Bump Knob, You Get The Continuous Cutting Benefit Of A Bump Head Without Having To Open The Head To Change Line, Designed To Accommodate Trimmer Line Sizes Between 0.080" - 0.105" Diameter, Works On Gas Trimmers Only. This product can be used easily. This product is manufactured in China. Features Autowinder II Bump Head: Replace the bump head of your gas-powered or cordless weed trimmer; This replacement part lets you easily load string trimmer line without opening the head by inserting the line and cranking the bump knob Universal Fit: Bump head replacement part is equipped for both gas and cordless trimmers; Accommodates up to 16 feet of and fits 80/1000-inch to 105/1000-inch diameter line Universal Fit: Compatible with nearly all brands of gas and cordless string trimmers including Echo, Stihl, Husqvarna, Redmax, Ryobi, Cub Cadet, Weed Eater, Poulan, MTD and more Professional Grade: Find the right replacement parts for your trimmer or weed whacker; Our brand-compatible trimmer line, fixed line, bump feed, hybrid and bladed heads are built to the high standards and demanding needs of professional landscapers Weed Warrior: We manufacture high quality universal fit weed wacker trimmer line, heads, and accessories built for extreme toughness through years of detailed research and development both in the lab in in the field USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.