It is very important that when purchasing spare parts for your Flymo, that you purchase genuine Flymo parts. It is essential that you fit genuine Flymo parts for your own safety and warranty protection. Flymo genuine parts are manufactured to strict guidelines and the high standards, according to the manufacturer. This spool and line will fit the following machines: Contour 500 XT, Power Trim 500 XT, Mini Trim Auto ST/XT/Plus XT, Mini Trim Contour XT, Speedi-Trim, Contour, Contour 500/700, Mini Trim Auto/Auto Plus, Multi Trim 250D/250DX/300D/300DX, Power Trim (pnc 9648641), Power Trim 500/700 (pnc 9648596/7), Revolution 2000/2300/2500 and Twist and Edge. Please refer back to your owner s manual before purchasing and fitting the part.