Optimize Your Pump with IMER Small 50 40mm Drain Cap Ball Enhance the functionality and maintain the integrity of your Small 50 Pump with the 40mm diameter Hopper Drain Cap Ball. This sponge ball is specifically designed to cap and seal the hopper drain pipe, ensuring a perfect fit and leak-free performance. Features Perfect Fit for Small 50 Pump: Designed to cap the hopper drain pipe. 40mm Diameter: Ideal size for effective sealing. High-Quality Sponge Material: Ensures durability and proper sealing. Easy to Use: Simple installation for efficient operation. Leak-Free Sealing: Prevents material leakage and maintains pump efficiency. Essential Maintenance Part: Keeps your pump in top condition. Compatibility: Exclusively for the Small 50 Pump hopper. Cost-Effective Solution: Affordable way to maintain pump performance. Professional Standard: Meets the needs of construction experts.