What tool do these attach to?

[Grandfather's Tools]

Hello All,

Are these grinding wheels? Sanding discs? Whatever the correct name is, can someone please show me a pic of the kind of tool they are used with? The smaller one has a raised metal ring for a connection, and the larger ones have nothing but a hole in the middle. I'm going through inherited tools trying to match things up. Will end up giving much away but will try to sell anything that has significant value. Appreciate any input!

 

[cvairwerks]

The upper two and the lower right are sanding wheels for a die grinder/cut off tool. The lower left one is roloc sanding disc. It needs a specific mandrel to be used, The others will work with standard screw on mandrels.

 

[Grandfather's Tools]

Thank you Sir! I have around 20 of the rolocs but don't see anything that looks like it works with it. I searched roloc and mandrel and see the piece (looks like a foot for a table leg)

 

[Grandfather's Tools]

The upper two and the lower right are sanding wheels for a die grinder/cut off tool. The lower left one is roloc sanding disc. It needs a specific mandrel to be used, The others will work with standard screw on mandrels.

When I google roloc sanding wheels, I see a spiral connection that mine do not have. When I go to google images, I do see some like what I have also, but most are of this spiral ****** looking thing. If I want to describe these on cl to give them away (seems they are only worth around a buck a piece and I have 23 of them) how would I describe this particular connection if they have more than one type? Thanks!

 

[Zeke]

Google "quick change sanding disc" and one of the hits is this image. If you look into this a bit you will find the names of the various systems. Roloc wasn't the only one.

The quick change discs come in different types of mounting: T1: push-on hub, T2: Screw-on hub and T3: roll-on hub.

 

[Grandfather's Tools]

Thanks for pointing me in the right direction. The discs I have are called Type S, or S Type quick release discs. The ones with the threaded nub are R Type