Jackson's : Alu Pro : Spanner

Alu-Pro Spanners are used once the canvas has been attached to the frame and stretched. They fulfil the function of a Canvas Key; that is, they are used to extend the Alu-Pro frame at the corners in order to tighten a canvas which has sagged slightly. They are fastened with a nut and bolt mechanism.\n\nPlease note, you will need a 4mm Allen key to use this product.\n\nFor more information about Alu-Pro products and an assembly tutorial featuring this product, see the Alu-Pro product showcase on the Jackson's Blog.