Compatibility: Suitable for Ryobi + STRING TRIMMER - 18V, 24V, 40V. Coil for Ryobi + model part Abs Spool & Nylon Line: Edge replacement rope spool line was made of premium raw material, ABS spool strong enough, flexible nylon line rope, not easy to break support fast cutting and lasting longer life. Convenience and High Efficiency: Allowing the line to stretch and cushion on impact with hard surfaces, the aerodynamic shape allows for less drag for more efficient cuts. easy to use and install pre-rolled Tool-less installment, gets in and out of the mower for ease of use. Precautions for use: centrifugal force and rapid cutting during use, recommend wearing eye protection and long pants to avoid unnecessary injury. And this cordless weed eater parts refill is only suitable for soft grass. it will be recommended to use blades to cut weeds. Size: Cordless Lawn Mower spool line diameter 0.065 inch to fit line hole. The 11ft spool line length provides a wider range of clippings. your:black+ Material:ABS,nylon Package Contents:6 x Replacement Spool The above package contents, products are not included. Note: Shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.