Tennant 71170 Scrub Brush 45L 24 SR Poly Spline This will fit Model 7400 Re-Nu Parts & Equipment: For all your cleaning equipment needs. With over 30 years of experience working within the janitorial supply industry Re-Nu Parts & Equipment is focused on providing you the customer with the best service and equipment possible. The only transactions we believe to be successful are when seller and buyer are 100%25 satisfied.