Oil filter disassembly key: universal design, adjustable to fit a wide range of oil filters, easy to adjust, and flexible to meet different requirements. Oil filter wrench: large torque and high hardness for strong removal performance; steel construction delivers reliable, long-lasting use when removing filters. Disassembly key: fine workmanship with good toughness and resistance; suitable for both disassembly and assembly tasks on car oil filters. Oil filter wrench: robust and durable steel construction; not easy to deform; safe and practical tool for removing the oil filter. Use scenarios: - Routine home oil change: adjust the disassembly key to fit your filter, use the wrench to loosen and remove the old filter, and apply the wrench again for secure removal or installation as needed. - Challenging filter removal: when a filter is stubborn, the high-torque steel wrench provides the necessary leverage without damage. - Workshop use across several car models: universal design and adjustable features allow one toolkit to cover different filter sizes and configurations, reducing the need for multiple tools.