FP-200V-This stainless steel pump is designed for dispensing directly from a standard shallow fountain jar. This pump with your jar can be dropped into a countertop cutout and also works in a non-insulated rail (available to hold 2, 3 or 4 pumps). Fountain jar is not included. The pump dispenses a 1 oz (30 mL) serving per stroke with the option to reduce the portion size in 1/8 oz (3.7 mL) increments, using the supplied gauging collars. When you place your order, be sure to request a colored knob engraved with your contents for a clean presentation. A black knob is standard. Standard features include: Stainless steel construction with captured valve balls to eliminate loss 1 oz (30 mL) maximum portion, now adjustable in 1/8 oz (3.7 mL) increments -- allows for Portion Optimization