Stainless Steel. Heavy duty concealed door stop from Asec featuring adjustable friction and stop position. It is easy to install and suitable for use with all door types. With an opening angle of up to 125°, these door stops will fit a standard euro groove and are easy to install. Please note that this product is not supplied with fixing screws.. Supplied complete with track & retaining plate. Opening angle up to 125°. Fits standard euro groove. Adjustable stop position & friction