- US (Yuesu) rivets, is an existing [minus mold] first round of rivet series the shape of the head in different series of. - US rivets, the shape when viewed from above, has become in a U-shape (U-Shape), hatch and warhead missile, is shape turn often to such replacement of the joint circular portion. The such as replacement of these sites [minus mold] was a classic, but you will be choices increases. - Because it is machined parts, cliff individual file is unnecessary. Is omitted, such as sanding of small parts that time-consuming, so that you can shed work time to other parts.