The DFA-TR7 is a trench drain foaming attachment for use with FOAM-iT foam units. Features: - Stainless steel construction - 7 inch round flat brush - Connects to compatible FOAM-iT units using included quick-connect fittings - Foam travels through drains, providing 360° contact along pipe wall surface area for maxium sanitation What's in the box? - Drain foaming attachment - Quick-connect fittings to make attachment and existing foam wand interchangeable - User manual