This handy device screws onto a faucet with a garden hose (or laundry tub) thread. When you press a bottle or carboy onto the “L”-shaped trigger it shoots a pressurized jet of water into the bottle or carboy, effectively rinsing in a very short time. Great for initially rinsing bottles or carboys before putting them into storage (so that deposits don’t dry or grow mold in the bottoms of them). Also good for a last rinse after sanitizing before bottling.
Manufacturer may vary.