Design with rounded corners and corrugations to prevent damage to the roof covering by means of high corners, but also to stiffen the lower part or to compensate for the used nail heads.

A fishplate is a flat piece of metal joining one rail or beam to another. The beam joints can be strengthened by iron fishplates. A fishplate is a metal or wooden plate that is bolted to the sides of the ends of two rails or beams, to join them. In rail terminology, a fishplate, splice bar or joint bar is a metal bar that is bolted to the ends of two rails to join them together in a track. The name is derived from fish, a wooden bar with a curved profile used to strengthen a ship's mast.

A binder clip, less commonly known as a paper clamp or foldover clip or bobby clip, is a simple device for binding sheets of paper together. It leaves the paper intact and can be removed quickly and easily, unlike the staple. Manufacturer of grating clamps - Grating Clamps, Grating Clip, G Clip and M Clamp.