SE - Mandrel Set - 1/16in. Arbor, 1/8in. Shank, 12 Pc - 281610MD This is a new set of 12 mandrels This part is used in tools for sanding and grinding They can be used with a Dremel tool Each measures approximately 1 3/4" (44.5) long with a 1/8" (3 mm) shank