HYDROBIL Male Radiator Cap 1/2" BSP, O-Ring and White Plastic, Nickel-Plated Brass, 10 Bar, Max. Temp. 120°C Stop End Plug for Towel Radiator, Nickeled Plumbing Fittings for Bathroom and More : Amazon.co.uk:
Chrome Cap / Blank Nut With Washer 1/2" BSP | Blanks Bath Tap Shower Outlet | eBay
Chrome Cap / Blank Nut With Washer 1/2 Inch BSP Blanks Bath Tap Shower Outlet | eBay
BFG Water Pipe Plumbing Fittings BSP, 1/2" BSP Male Plug Stop End Cap, Plumbing Joints and Connections, Chrome-Plated Brass 10 Bar, Max. Temp. 95°C, BSP Connector, Blanking Cap : Amazon.co.uk: DIY &