Snaps onto spool line. Attaches quickly and easily without the need for tools for efficient spool replacement. Impact resistant ABS material provides strength and durability. Protects your line and keeps it in place on your line cutter. Made of high quality material, durable and practical to use. Easy to install and reliable to use. Strong and durable, long service life.Compatible models: ART 23 SL (3600HA5000), ART 23 SL (3600HA5070), ART 2300 (3600HA5002), ART 23-28 (3600HA5001), ART 26 SL (3600HA5100), ART 26 SL (360000). HA51700 ), Art EasyPackage contents: 4 spool coversNote: The data are all manual measurements, please allow 1-3cm error, due to the difference in light and display, there will be a certain difference. color, depending on the physical object received.