Randy's Black Label Cleaning Caps Keep your liquid solution and the residue that it breaks down right where it belongs during your cleaning process.Our cleaning caps fit over the openings of a wide range of smoking devices to help speed up the process and ensure you don’t make any additional mess. Pack Size: Three (3) silicone caps Cap Sizes: 35mm / 47mm / 72mm (1.4" / 1.9" / 2.8") Cap Color: Black