"Weed Eater Bladed Head Set Compatible With Ryobi Trimer Material: Nylon, Fiberglass Product dimensions (LWH): 7 x 7 x 2.7cm Package dimensions (LWH): 23x8x4.5cm Weight:110 g Feature Compatible with RYOBI Auto-Feed String Trimmers: 18-Volt, Hybrid, 24-Volt, 40-Volt, P2080, P2008A, P2008, P20100, P20010A, P20010, P2210, P2210CAN, P2200A, P2200ACV, P2200, P2030, P2031, P2003A, P2003, P2060A, P2060, P2006A, P2006, P2052, P2051, P2050, P2005, P2040, P2041, P2004, P20102, P2102BTL, P20120, P20103, P20103BTL, P20130, NOTE: It does not compatible with RYOBI 40V EXPAND IT. The Bladed Trimmer Head fixed dual blades mean that you do not have to struggle with your trimmer line as it gets stuck Easy Installation: simply push this trimmer head into the stringer socket and it automatically locks in place with assistance from the side push buttons, and it does not need adapter. Suggestion---Make the spool hole opposite the straight lines on the lid It is suitable only for cutting weeds in the horizontal plane. When cutting vertically, the blade breaks too easily. It is recommended to use a string trimmer reel for vertical cutting. Package Include 1 x Cap 8 x Blade 4 x srew set"