Bulk packaged without any bits. Keeps bits at the proper angle. Guides cutting path. Attaches easily to corded rotary tools and 9.6V Cordless MultiPro in place of the housing cap. Will work with the Black and Decker RTX. Depth adjustment up to 19mm. These are identical to the Dremel 565/566 Cutting Adapter, only marked Milescraft. Rotary tool not included. For use with most Dremel, Black and Decker RTX, Co/Tech, King Craft, Budget, Maxicraft, Einhell, Wetekom, and Skil Small Rotary tools.