You will get 1 Piece FAST FREE SHIPPING Over 6000 Positive Feedback I also sell these in 2pc - 3pc and 6pc and carry a Niagara replacement shower heads and other aerators. So check out my store :) These are a name brand NIAGARA and NOT A CHEAP replacement. These are a great way to save money on your water bill and to replace the old end on your faucet that is clogged up. This is a great option with 3 flows available on one head 0.5/1.0/1.5 GPM Niagara's revolutionary Tri-Max Aerator offers three adjustable spray options for optimal task performance and maximum water savings. Simply twist the aerator to produce a 0.5 GPM flow rate for soaping, an eco friendly 1.0 GPM, or the 1.5 GPM power rinse mode. These aerators accommodate both male and female applications and install by hand without tools. Niagara's faucet aerators save money on water and energy by producing forceful streams at a reduced flow rate that minimizes the amount of energy needed to heat hot water. Water sense labeled Unique aerator uses three pressure-compensated flow rates: 0.5 GPM / 1.0 GPM / 1.5 GPM Installs easily, by hand and without tools Patented flow compensator gives consistent flow regardless of available water pressure Tri-Max aerator is a dual-thread system accommodating both male and female applications Meets or exceeds ANSI specifications