Pre-wound: The spool is 4 meters long and 1.6 mm in diameter and factory-wound for maximum reliability and uncompromising performance. Compatible with EasyGrassCut 23, 26, 18, 18-230, 18-260, 18-26. Premium quality: Our spool replacement is made of durable ABS material and nylon. Bendable, flexible and durable. Easy to use: Snap-in installation for quick and easy replacement without tools. Professional CNC machine cutting and automatic spool winding is and less time-consuming than manual winding, which reduces damage to the grass trimmer and eliminates problems during cutting. Warm tip: Strong centrifugal force and fast cutting during use. Wear eye protection and long pants to avoid unnecessary injuries. Material: ABS, Nylon Color: Black Package contents: 6 x Spool & Wire Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.