Our edge protector is molded from high density polyethylene, it has excellent cold impact and chemical resistance and is UV protected. The best part is that it will protect your boat from damage. Size 42" long 4" top flange 6" side flange can be cut in middle to form two 21" sections. Attach with 1/2" lag or carriage bolts (not included). This product is being discontinued and is no longer available for purchase. - 5/7/2020