Closed System Oiler, Reservoir Cap. (Oz.) 4 oz, Height (In.) 6 1/2 in, Width (In.) 3 3/8 in, Thread Size 1, Bowl Dia. 2 1/4 in, Polysulfone, Capacity 4 fl oz, Function Maintains Constant Level Of Oil And Prevents Accidental Overfilling, For Use With -, Includes Wire Guard, Spout Length (In.) -