This is the upholstery tool, also known as the furniture tool, upholstery brush, upholstery nozzle or t-tool for the Eureka The Boss Ultra Smart Vac Models in the 4800 series (if your Eureka model begins 48##, this will fit your vacuum). Genuine Eureka attachment, part number 38284-3. Fits Eureka models; 4870AT, 4870ATV, 4870BT, 4870DT,4870 GZ, 4870HZ, 4870K, 4870MZ, 4870PZ, 4870RZ, 4870SZX, 4872AT, 4872BT, 4874AT,4870HZ, 4870PZ, 4870K, 4870MZ, 4870RZ, 4870SZX, 4880A, 4880B, 4880D, 4880AT, 4880BT, 4885AT, and 4885BT.