Full case of 20. The Manthorpe First Fix Radiator Pipe Guide & Seal in 20 x packs is designed to securely hold your 10mm pipes in place while ensuring a watertight seal. Perfect for plumbing installations, this product helps prevent leaks and ensures a tidy finish. Made by the trusted brand Manthorpe, you can rely on the quality and durability of this essential plumbing accessory. Ideal for DIY enthusiasts or professional plumbers, this product guarantees a smooth and efficient installation process.