Dear customer, The BOSCH machine is updated every year. If your machine is the newest version, the cover (cap) may not fit. If the cap does not fit your machine, please contact us. Compatible with Bosch trimmers: EasyGrassCut 18 / EasyGrassCut 18-230 / EasyGrassCut 18-260 / EasyGrassCut 23 / EasyGrassCut 26 / Art 23 SL / Art 26 SL Easy to use, easy to install, even without tools you can install it yourself. Line spool 4.9 meters, wire diameter 1.65mm Line spool is factory wound to ensure superior feeding. Color: Black Quantity shipped: 2 pieces Note: 1.Due to the different light and screen settings, the color of the product may be slightly different from the picture. 2.Due to different manual measurement methods, please allow slight differences in size.