The From the Anvil 5mm Male & Female Screws Black are replacement bolts for lever handles and come in pairs. The screws are 5 x 90mm and the sleeves are 20mm. Black Screws The screws have a black finish - this is baked in a high-temperature oven to give it good durability and can be used internally or externally. To remove dirt deposits, simply wipe over with a lightly oiled cloth from time-to-time and this will restore it to its original condition. Other Variations They are also available in a pewter finish - sold as a separate product.