TN 57553 48" 8 Double Row Nylon Main Broom for Tennant 360 Sweepers. An open configuration of crimped Nylon filament for sweeping light to medium litter on smooth to irregular flooring. Nylon brushes can be used indoors or for limited use outdoors. Fits Tennant 360 sweepers. Will not fit Tennant 365 sweepers. Replaces Tennant 57553, Carlisle/Flo-Pac 710348, 36710348 - Our Part Number TN 57553