[NewMontanaWorkshop]

Here's another item, again first person to correctly identify the item gets 50 points.

 

[steveo]

Here's another item, again first person to correctly identify the item gets 50 points.

Sometimies I wish I had one of these, used to drill holes of various diameters, diameter too small, just go down one more diameter. Primarily used in a drill press where you have better control of bit and material. Used on thin material only.
steveo

 

[ejant]

I believe it is called a unibit, drill holes ov vatious sizes.

 

[Mike]

Unibit or step drill depending on the manufacturer. They come in two sizes.

 

[Dr.Zook]

It can also deburr holes.

 

[NewMontanaWorkshop]

Sometimies I wish I had one of these, used to drill holes of various diameters, diameter too small, just go down one more diameter. Primarily used in a drill press where you have better control of bit and material. Used on thin material only.
steveo

Winner!!!

I didn't specify (I'm new at this ) that the proper name 'and' use be included, so your the winner with the description of use.