This helps make swapping hook and loop sandpaper discs swift and simple, in order to avoid downtime. Please note, Should your sander doesn't have a compatible hook & loop backing, a backing pad is required for use, which we offer independently. Russell Conveyor & Equipment Sortation Units gives responsible and https://www.hukums.com/products/stanley-8-pcs-6-22-mm-steel-double-open-end-spanner-set-70-379