Digital: 3.20"x 3.19"x 1.97" Power Adapter, 60.00" Air Tube and 40.00" Power Cable, 3.58"x 1.25" Air Switch Adapter Button, 1-1/4"Countertop Hole at Least, 2HP, UL Certification.Feature: Air Switch Set Button Cover is Made of High Quality Brass. There is A Drainage Hole on The Side of The Air Switch Button. Waterproof, Anti-leakage.Work: Air Switch Adpter for Disposals Fit in Any Food Waste Disposer, even Dishwasher.Install: Air Activated Button Can be Easily Installed on Sink Top or Counter Top by Island Installation. Two Gaskets Provide Stable Installation.Finish: Matte Black Sink Adapter Unit Button, Available Six Finishes, Air Switch Unit Button Match Black Faucets Style.Plating rust oil on the surface will reflect a little light.