Abstract: Device to be attached to a line comprises a body with a through hole and at least one line receiving recess extending on the outer side of said body, wherein (a) a line retaining portion is provided for retaining the line by friction, form-fit and/or adhesion, and/or (b) the line receiving recess forms in the wall of the through hole two body binding portions having substantially rounded cross-sections. When tying-in a device according to the last mentioned second alternative (b) a line loop is threaded into the hole and the body is then rotated through the loop for achieving a line intertwist at said body.