1.1 Pipe cutter made from a high strength alloy – stabilizes an unstable starting point and keeps the cutting blade rolling in a consistent circle during cutting. The 4–30 mm range can be used for cutting copper-aluminum-plastic pipes with a wall thickness of 1.5 mm. 2.2 Ratchet wrench made from a high strength aluminum alloy – for adjusting the opening of expansion valves, ball valves and other refrigeration valves; labor saving ratchet mechanism. Use scenarios: - In HVAC or plumbing work, cut copper-aluminum-plastic pipes in the 4–30 mm range with a 1.5 mm wall thickness. - In refrigeration maintenance, adjust openings of expansion valves, ball valves and similar valves with a tool that reduces effort. - In tight or constrained spaces, rely on the high strength, lightweight construction to improve control and reduce hand fatigue.