If You Bought Some Hardware For Your Rotary Tool That Is Not Pre-mounted, Then These Screw And Shank Mandrel Sets Will Surely Come In Very Handly. You Can Attach Cutters, Discs, Etc. To Them And Do The Job Efficiently. This Package Comes With 12 Sets Of 3 Pieces Per Set Including: The 1/16" Screws, The 3/32" Mandrel And The Tiny Red Rubber Ring To Give You A Tighter Hold.

* 12 Sets In A Package

* 3 Pieces In Each Set

* 1/16" Screws

* 3/32" Mandrels

* Red Rubber Rings Included