These are the original Pentel Pencil Conversion Mandrels. The mandrel is set up for use after drilling with the step drill or other drilling methods. They are threaded for 1/4 x 28 on one end and 8-32 on the other. This ad is for the mandrel only as most penturners have the nuts and a slimline bushing already or the nuts can be picked up locally.  Select from the add-ons below if  you need a set of bushings and mounting nuts.

The cost is $19.95 which includes shipping to US addresses.

I am willing to work with buyers outside the US but shipping will be additional.

Step drills with collar are also available in another ad at $19.95 with a $5.00 discount if you buy the mandrel and step drill as a set.

Also, check out the FAQ at this link: FAQ Link