SP -This stainless steel pump dispenses directly from a #10 can or 3 quart (2.8 L) stainless steel jar 94009. A 1 ounce (30 mL) serving is the maximum portion per stroke. Portions can be reduced in 1/8 ounce (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 .