This deck-mount mixing faucet is for single hole installations with maximum 1-1/2 in. diameter hole size, though 1-1/4 in. diameter is recommended). The all-brass body with vandal resistant anti-rotation locking pins to prevent damage to counter tops can be removed in field if not required. The 12 in. high (unmounted) gooseneck can be installed as a standard rigid or swivel. The Delta Commercial offering goes beyond providing exceptional Commercial-grade performance with products that reflect the personality of the individual institution. All Delta Commercial products are backed by the industry's best 5-year limited warranty. Not for use with potable water For use in laboratory settings Field installation of spout as rigid or swivel Assembled shank with brass locknut Two Handle Deck Mount Single Shank Laboratory Mixing Faucet