[Package Contents]: You will receive 1 faucet aerator wrench, equipped with 4 different thread sizes: M20, M22, M24, M28. It allows you to effortlessly switch between different aerator sizes, ensuring a versatile and convenient experience.[Perfect Tool]: With the use of this faucet wrench, you can install an aerator that generates a bubble effect, increasing water conservation by up to 40%. Simultaneously, the aerator contributes to water filtration, maintains a constant flow rate, and offers an adjustable flow rate.[Quality Material]: Made from exceptional quality plastic, the faucet strainer wrench makes it easy to replace the aerator without scratches. Maintenance Tip: To prevent bacteria buildup and limescale while optimizing flow, it is recommended to replace your faucet aerator at least every six months.[Wide Application]: Practical and user-friendly, this faucet strainer insert wrench is applicable to virtually all household faucets. Whether for bathroom faucets, kitchen faucets, lavatory faucets, or outdoor faucets, it effortlessly facilitates aerator replacement, adding convenience to your daily life.