- Multiple diameters: The calibrators cover 16, 18, 20, 25 and 32 mm to effectively restore the cylindrical shape of aluminum-plastic composite pipes after cutting. - High quality: Stainless steel calibration mandrel provides wear resistance and durability to meet daily installation demands. - Wide compatibility: Suitable for multilayer composite pipes, copper tubes, aluminum composite pipes, heating pipes, and underfloor heating pipes. - Comfortable grip: The round aluminum-plastic tube features an ergonomic handle for a comfortable grip and easy handling. - Use scenarios: - After cutting multilayer, copper, or aluminum composite pipes, use the calibrator to restore true cylindrical form before fittings. - In heating and underfloor heating installations to ensure smooth, round pipe ends for reliable connections. - During on-site maintenance to prevent deformation and improve joint performance.