Allan Wrench to remove Integra Faucet Handle?

Check to see if you have the right size in your set, not all sets have specific sizes. Maybe you need one measured in 64ths or 32nds. Find the one that's one size too small and the other that is one size too large, do the math on what you need. Also, check the allan you have that is one size too small to make sure its not worn/badly used, that may be the size you need its just worn out. Also, shine a light on the head of the screw to make sure its never been stripped. If it has you will need an inexpensive screw extractor from Lowe's or Home Depot and hopefully they sent you a new screw with the handle. Make sure the screw head isn't star shaped if it is, its not an allan, its whats called a torx bit. If I remember correctly Moens are, but I don't, lol. Good Luck!