Secure connection for a long time. The DOSH-FSAD adapter combines the GECKO DOSH and a FESTOOL guide rail. The GECKO can hold the guide rail in place in combination with this adapter. Particularly where it is not possible to position fastening clamps; for example, in the middle of large panels or on a tiled floor. Designed for a system – the GECKO can be mounted directly to a guide rail using the guide rail adapter. Tool-free fitting of the adapter on the GECKO. The adapter can remain on the guide rail and the GECKO can be quickly installed without tools. Panel cuts. Production of recesses in large panels. Cutting of large-format tiles. Tile repairs. Bearing of panels and glass panels. to fix the guide rail at the GECKO. for FS/2, FS/2 KP and GECKO