This is a new pack of Ryobi .080" Replacement Auto-Feed Single Line Spools. The pack contains five spools, each made of plastic, and is compatible with Ryobi string trimmers. The spools come in green color and require no assembly. The product is designed for 18V voltage and is model number AC80RL5. This item is perfect for anyone looking for a replacement spool for their Ryobi trimmer.