Constant Level Oiler Reservoir Cap. (Oz.) 16 oz Height (In.) 7 9/16 in Width (In.) 4 1/8 in Thread Size 1/4 Bowl Dia 4 1/8 in Glass Capacity 16 fl oz Function Maintains Constant Level Of Oil And Prevents Accidental Overfilling For Use With - Includes Adjustable Level Setting Large Surge Chamber to Prevent Overflow Side and Bottom Spout Length (In.) -