Usage Tips:Aerator key material: the faucet aerator keys are made of ABS, strong and sturdy, which can effectively remove faucet aerators Size: 3 pieces M16.5, 3 pieces M18.5, 3 pieces M21.5, 3 pieces M24, 12 pieces in all, with 5 pieces cache faucet aerator key removal wrench tools, sufficient quantity can meet your needs Fit most cache aerators: our wrench tools are suitable for most brands of cache faucets aerators, which are practical and convenient in daily use Easy to use: with these aerator keys, you can easily unscrew your faucet aerator out and then replace or clean the blocked one, fixing low flow faucets Aerator key: help remove most cache faucet aerators, please measure carefully before buying in case of unfit situation Colour: blue + gray + red Material: plastic Package Contents: 1 set x Cache Aerators Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.