WA0037 Replacement Spool Cap Cover compatible with Worx WG184 WG190 WG191 WG168 automatic feed string trimmers.WA0037 Spool Cap, Grass Trimmer Spool Cap Cover compatible with WORX made of high quality ABS, durable compatible with use.WA0037 Replacement Spool cap compatible with WORX protects trimmer line fixed spool, prevent weeds from getting stuck inside, avoid damage to the trimmer.WA0037 replacement grass trimmer spool cap cover is compatible with use on 40-volt models WG168 weed and grass trimmers, WG184 weed eater parts, WG190 string trimmer parts, WG190 string trimmer parts. WA0037 Replacement Cap works with WA0014 Trimmer Spool compatible with Worx replacement parts.Easy to install , No tools needed to install, Snaps in place over spool line.Colour: BlackMaterial: ABSPackage Contents:4 * WA0037 replacement spool capOnly 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.