Quick lock mount; Twist on and twist off design ensures fast easy replacement of existing disposer mounts; Polished stainless steel sink flange complements stainless steel sinks. The Quick Lock Mounting System is available only from In-Sink-Erator. The Twist On Twist Off Quick Lock design helps ensure fast and easy replacement of existing disposer mounts. The polished stainless steel In-Sink-Erator sink flange will compliment most stainless steel sinks.