Delta Lahara Stainless 1-handle Single Hole/4-in Centerset WaterSense Bathroom Sink Faucet with DrainDIAMOND Seal Technology is less hassle to install and helps your faucet perform like new for life, reducing leak points and lasting twice as long as the industry standard Everything you need is together in one convenient box, including integrated InnoFlex PEX supply lines 1 or 3 hole 4 in installation Metal pop up ADA Compliant 1. 20 gpm at 60 psi, 4. 5 L min at 414 kPa Watersense labeled faucet uses at least 20% less water than the industry standard