Adjustable Hook with Support Clamp and ScrewsStainless steel hook with 3 screws and support clamp for aluminium rail. This set of accessories is used for tile roofs. The aluminium rails and middle end clamps can be purchased separately. In the present listing, the package includes: Stainless steel hook adjustable 1x Screw 3x Support clamp x1 Notice: The hook has a 180 degree bend. Depending on the application, the tiles might have to be ground slightly for a better fit. The price is for 1 unit