QUALITY MATERIALS: Box is made from durable 18/8 stainless steel and sits in a heavy non-slip rubber base STANDARD SIZING: Standard coffee shop sizing measures 4-1/2-inches by 4-3/4-inches by 6-1/4-inches tall. BAR INCLUDED: Knock box comes with removable rubber-coated bar CARE INSTRUCTIONS: Dishwasher safe CARE INSTRUCTIONS: Box is dishwasher safe; Rubber parts handwash only