Suitable for homeowners and professional plumbers who want to quickly and effectively release trapped air from radiators to improve heat distribution entire room Improves the heating efficiency of your home with these radiator vent valves, a must for maintaining the best radiator performance and energy savings Features a convenient rotating plastic head that ensures an easy and secure fit for all standard radiators with 3/8" thread These radiator valves are perfect for use in residential or commercial environments and are designed for easy integration into the maintenance routines of most heating systems Self-sealing design of these vent valves eliminates the need for additional sealant and allows for hassle-free installation, Manufacturer: OSNIYAW