Spiral bands clean, smooth, blend, and polish contours. They're chatter-free and install on an expanding drum mandrel for use in a die grinder or other rotary tool. Spiral bands have a coated abrasive applied to a backing. Bands can be quickly changed out as needed to change grits or replace worn bands. Bands can be reused after they've been removed from the mandrel. The flexible, tear-resistant cloth backing conforms to contours and is more durable and tear resistant than paper.