1 What you can get: 3 x String Trimmer Replacement Spool, 1 x cover, enough quantity for using or replacement, working as practical tools 2 Compatible with for model: F016800569 / F016800385 spool line, which is compatible with ART 23SL and ART 26SL, please do check the model carefully before purchasing to make sure it's the right fitting you need 3 Work more efficiently: these replacement lines are easy to install and flexible to use, which can use centrifugal force and aerodynamics to ease the tedious work of hand-winding spools, making you work more efficiently 4 Warm tip: strong centrifugal force and cutting fast during using, please wear eye protection and long pants to avoid unnecessary injury 5 Reliable material: High-quality ABS spool & durable nylon thread, flexible and long service life Material:ABS, nyloncolour:blackPackage Contents:3 * Spool line1 * Spool coverOnly the above package content, other products are not included Note: Light 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