【SUITABLE FOR MODELS】 - For several models of Worx trimmers / trimmers: WG150,WG151,WG151.5,WG152,WG153,WG154,WG155,WG155.5,WG156,WG157,WG160,WG160.1,WG160.2,WG163,WG165,WG175,WG180. Thread trimmer spool model: WA0010, coil cap cover model: WA6531. 【SPOOL SPECIFICATION】- 3m spiral nylon co-polymer resin and synthetic cut/cut line for original Worx WA0010 spools. 1.65mm diameter wearable cord provides fast cutting and longer life. 【DURABLE MATERIAL】- High quality automatic cutting spool and durable co-polymer nylon line of helical design, flexible and flexible as well as durable. Wacker's high quality ABS weed cover is sturdy enough to hold the spool in place and hold it securely while mowing. 【CHEAP & TIME SAVING】- Quick and easy replacement Effortlessly without tools by snapping into place. Professional CNC cutting and automatic rewinding are safer and time-saving than manual rewinding, reduce damage to the grass trimmer, and do not jam when mowing. 【PRECAUTIONS FOR USE 】 - When using this product, wear safety glasses and long underpants to avoid overflow injuries. Remove the plug from the socket before replacing, installing or removing accessories. This cordless weed killer refill is only suitable for young weeds. Strong weeds use other tools such as blades for pruning.