It's 3 1/2" wide, almost twice that of the standard one supplied with all our drum carders (shown above). Makes removal of the batt, especially from the doublewide drum, much faster. The pads are 3" wide with 1/2" long points spaced 72 per square inch. Use the center portion of the Doffer brush to contact the curve of the large drum. Starting at the seam, swipe the Doffer brush down the drum in the same direction as the teeth on the drum. Continue across the width of the drum. Slowly rotate the drum backwards as you use the brush to clean the entire drum.