The National Brand Alternative FT-4 Fitting Brush is designed for cleaning 1/4 inch fittings and pipe connections. It features durable alloy steel bristles in a crimped wire design to provide effective cleaning of corrosion, debris, and buildup. This brush is ideal for plumbing, HVAC, and general maintenance applications where clean and smooth connections are needed. It is strong, long lasting, and easy to use for professional and household projects.