The Astoria Knob Rub Water Black Brava is a genuine Astoria spare part for commercial espresso and coffee machines, used for handles & knobs repairs and routine maintenance. Brand: Astoria Type: Handles & Knobs Manufacturer Part Number (MPN): EU10056146.3 Condition: New Compatible with Astoria commercial coffee machines. Supplied by Coffee Machine Spare Parts - UK commercial coffee machine spares and parts.