How many holes are need in my sink to install my single handle kitchen faucet?

How many holes are need in my sink to install my single handle kitchen faucet?

How many holes are need in my sink to install my single handle kitchen faucet?
Our pull down kitchen faucet is available that mount through 1 hole applications. If your existing faucet is covering up the holes, you can look under the sink to see how many you have.