1 hole installation v. 3 hole installation

https://www.homedepot.com/p/Delta-Classic-Single-Handle-Standard-Kitchen-Faucet-in-Chrome-with-Fittings-100LF-WF/204184486   The one above is 3 hole 8' inch installation.  The one below looks exactly the same.  But it is one hole installation.  Can someone tell me why the installation requirement is different?     https://www.homedepot.com/p/Delta-Classic-Single-Handle-Standard-Kitchen-Faucet-with-Fittings-in-Chrome-101LF-WF/204184487   I am quite puzzled.  So really appreciate any explanation.

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• 鏈接好像不對。我家中廚房是3 hole的，廁所裏的是2 hole. 我也不明白，幫你問問。 -康賽歐- ♀ (0 bytes) () 11/28/2017 postreply 20:37:31

• 好的. Thank you. -joeyli- ♀ (261 bytes) () 11/29/2017 postreply 06:52:42

• 買個1/2的就行，否則買個supply line，一頭是3/8，一頭是1/2的。 -康賽歐- ♀ (0 bytes) () 11/29/2017 postreply 11:28:37

• 謝謝 I think you are really sweet. -joeyli- ♀ (0 bytes) () 11/29/2017 postreply 14:48:27