Faucet Aerator Adapter Kit - Six (6) Piece, Male & Female INCLUDES the three [3] most commonly used adapters and washers to adapt 15/16-Inch-27 male, 3/4-Inch-27 female and 13/16-Inch-27 female thread AND ALSO INCLUDES three [3] specialty adapters and washers to adapt to 13/16-Inch-27 male, 55/64-Inch-27 male, and 55/64-Inch-27 female This is not a one size fits all or universal product set, nor is it intended for use w/ snap on adaption, these are threaded adapters Materials used are BPA, PVC, and Phthalates free Plastic. Aerator X Aerator Used to adapt various aerator threads *note not all sizes are sold in this kit* if you don't find the size you need simply return the product for a full refund