ABOUT EASTWOOD CONTOUR SCT® EXPANDING DRUM The Eastwood Contour SCT® Expanding Drum is for use with the Contour SCT only. Drum dimensions are 4 inches wide by 3.5 inches diameter For use with Eastwood Contour Sanding Bands 21152 21155 and 21156 CONTENTS Contains One Contour SCT® Expanding Drum SAFETY Always wear all proper personal protecion equipment when using this type of tool. Never attempt to replace a SCT Drum with unit plugged in. Make sure to fully read and understand the instruction manual for this tool before use