Stuffer Tool - Stuffer tools makes replacing the seals & spacers on the Fleck 2510, 2700, 2750, and 2900 heads much easier. Fleck Part - This is a genuine Fleck part and not a generic replacement. Fleck part# 11098. Return Policy: This tool is exempt from our standard return policy unless it is found to be defective. All returns of this tool will be assessed a $20 restocking fee. The stuffer tool makes replacing the seals & spacers in the Fleck 2510, 2700, 2750, and 2900 heads much easier and saves you time. The stuffer tool is highly recommended. Instructions are included on how to use the tool. Fleck part# 11098.