Check the listing for details. Ultimate 321 Bowling Ball Plug Pro Pump-Hardener Pump. Color: White, Condition: New. Listed at 26.39 USD. Ultimate 321 Bowling Ball Plug Pro Pump Enhance Your Bowling Game Upgrade your bowling ball plug process with the Ultimate 321 Bowling Ball Plug Pro Pump. Choose the perfect pump for your needs from the dropdown above. Key Features: Compound Resin Pump: Disperses 1 oz. of resin per pump. Hardener Pump: Disperses 1/3 oz. of hardener per pump. Why Choose Ultimate 321 Pro Pump? Experience precision and efficiency with our specialized pumps. Here's why our Pro Pump stands out: Optimal Resin Dispersion: The Compound Resin Pump ensures a perfect 1 oz. resin distribution, providing consistent results. Precise Hardener Measurement: The Hardener Pump disperses 1/3 oz. of hardener per pump, allowing accurate hardener application. Upgrade Today Maximize your bowling ball plug efficiency with the Ultimate 321 Pro Pump. Choose the right pump for your needs and elevate your game!