The LDR Industries 350 4XCL 4" x Close Black Pipe Nipple is a heavy equipment part designed for use in various industrial applications. This model, manufactured by LDR Industries, is made of durable black pipe material and is 4" in length. The close end design makes it suitable for connecting pipes or fittings in tight spaces. Despite the rusted appearance due to oxidation, this product is still functional and reliable for industrial use.