The Polypipe 450mm CRD450 Straight Coupler is a premium quality plumbing fitting made from durable plastic. Manufactured in the United Kingdom by the renowned brand Polypipe, this coupler is designed to provide a secure connection for twinwall pipes, ensuring efficient and reliable plumbing systems. Perfect for various home plumbing and fixtures projects, this coupler is a practical and reliable choice for any DIY enthusiast or professional plumber.