Multiple size options for flexible interior piping: 1/4 inch (red), 3/8 inch (green), 1/2 inch (yellow), and 5/8 inch (blue). This covers common air conditioning projects and various bend requirements. Easy identification: each size is color coded for quick recognition during installations or repairs, helping you select the right bend tool fast and reduce handling mistakes. Reliable materials: the bending tool is made from PE plastic, providing durability for regular use and maintaining bend integrity over time. Interior pipeline application: designed for interior installations, enabling smooth and accurate bends in confined spaces such as wall cavities, ceilings, and utility areas. Key benefits and performance: supports multiple pipe sizes in one tool, reduces the risk of kinks and misalignments, and helps streamline workflow by enabling consistent bend radii in tight or constrained environments. Use scenarios: Inwall or ceiling AC piping with tight corners: select 1/4 inch red for compact bends near fittings without crowding adjacent components. Routing midsize interior lines around obstacles in a utility closet or service area: use 3/8 inch green to achieve a balanced bend with adequate clearance. Larger interior runs near HVAC equipment where a bigger bend is needed: use 5/8 inch blue for a smoother radius and fewer recovery issues.