Made of durable metal material, our 20 hole mounting. kasimeribetto 2 pieces Bed in a Bag. [Features] · 20 3-ring binder brackets. Made from steel Size A5 2/rivet case with number of holes 20, mounting holes pitch 9.5 mm, slim fitting will work tools ribettouti stick (sold separately) is required. Slim fitting with work tools ribettouti stick (sold separately) is required. The color of the item may differ from the actual color and may look different from the actual product, Please understand.