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 Each: The 3/32" Screws, The 1/8" Mandrel, And The Tiny Red Rubber Ring To Give You A Tighter Hold.

* 12 Units In The Package

* Each Unit Has 3 Pieces

* 3/32" Screws

* 1/8" Shank Mandrels

* Red Rubber Rings Included