Polyplumb 15mm Metal Pipe Inserts (PK50)The Polyplumb 15mm Metal Inserts are essential components for reinforcing pipe ends when using push fit fittings. They ensure a secure connection and help maintain the shape of the pipe under pressure. Key Features Designed for 15mm pipe Strengthens pipe connections Improves joint reliability Required for push fit systems Corrosion resistant metal construction Easy to install Specifications Size: 15mm Material: Metal Use: Pipe support insert