Pushbutton and Switch One-Piece Plates: Type - Pushbutton Identification Plate; Size - 30.5 mm; Operator Type - All; Plate Shape - 1/2 Round; Plate Size - Standard; Legend - Blank; Material - Aluminum; Field Color - Black; Height - 1.77 in, 45 mm; Width - 1.77 in, 45 mm; Manufacturer Series - 10250T