Abs Spool & Nylon : The edger replacement string spool were made of premium raw material, ABS spool sturdy enough, nylon string flexible, Not easy to break supports fast cutting and lifetime. Compatiblity: Suitable for One+ STRING TRIMMER - 18V, 24V, 40V. Spool for One+ model part# AC14RL3A. & High Efficiency: Allowing for the to and cushion on impact with hard surfaces, the aerodynamic shape allows less drag for more efficient cuts. easy to use and install -wound Tool-less installment, in and out of trimmer for ease of use. Use Precautions: Strong centrifugal force and cutting fast during using, recommend to wear eye protection and long pants to avoid unnecessary injury. And this cordless parts refill is only suitable for tender weed grass. Strong weeds will been recommended to use blades to . Size: Cordless grass trimmer spool diameter 0.065 inch to fits hole perfectly. Spool length 11ft a wider range of mowing. Colour:black+blue Material:ABS, nylon Contents: 6 x Replacement Spool Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.