The large cones fit into a split-tapered mandrel #M20. The small cones fit onto a threaded mandrel #M100. They are all quick and easy to change, and the wrapped-paper design exposes new grit as the cones wear down.
You will wonder how you ever did without these handy miniature sanding mandrels and cones. They are quick, convenient and economical. Best of all, they do an incredible job of fine sanding and blending in those hard-to-reach areas that all carvers encounter all the time.
Available in two sizes and two grits in each size. See below for Mandrels you will need.