This spool cover is a replacement for the Flymo FLY060 part number 505513590. It is compatible with a wide range of Flymo strimmer models including Contour, Contour Power Plus Cordless, Contour Cordless 20v Li, Contour Cordless 24v, Contour Cordless 500XT, Contour Cordless XT 18v, Contour XT, Contour 500, Contour 500E, Contour 500 Power Plus, Contour 500XT, Contour 600HD, Contour 650E, Contour 700, Contour 700 Power Plus, CTXT25, ET23, ET23DX, ET23+DX, ET25+DX, EIT23, EIT250, EIT300, MET230 Twin, Mighti-Trim Li, Minitrim Auto 2003, Mini Trim Auto ST, Mini Trim Auto XT, Mini Trim Auto Plus XT, Minitrim Auto Plus, Mini Trim Contour XT, Multi Trim 250D, Multi Trim 250DX, Multi Trim 300D, Multi Trim 300DX, Multi Trim 250 Plus Twin, Multi Trim 300 Twin, and Power Trim 300. It also fits Sabre Trim and Mini Trim Auto Plus/ Auto Plus XT/ Auto/ Auto ST/ Auto XT models. Made of tough and durable orange plastic.