Abstract: A top-mount faucet assembly includes a coupling mounted on a counter that selectively couples a faucet thereto. The counter coupling has a disc-shaped collar with two keepers and a land for selectively locking the faucet. The land has a v-shaped part and a n-shaped part. The faucet has a main valve body with a locking assembly. To couple the faucet to the counter coupling, the main valve body is placed over the coupling and turned clockwise so that slots align with the keepers to fix the faucet axially to the coupling. As the faucet rotates clockwise, the locking assembly rides along the v-shaped part until captured by the n-shaped part to lock the faucet in place rotationally. To uncouple the faucet from the coupling, a button is pushed so that the locking assembly moves radially inward out from the n-shaped part, then the faucet is turned counter-clockwise.