What is an R&F blank?

[woodchucker]

Saw this on ebay, not sure what an R&F blank is.

https://www.ebay.com/itm/166261972325

 

[benmychree]

Does not look like something that most folks would need ---

 

[buffdan]

rotary broach bits

 

[woodchucker]

Does not look like something that most folks would need ---

I agree, but curiosity has me in it's grips.

 

[extropic]

R&F could be the manufacturers name.

Pictures are too low res to see if they have back relief (rotary broach). Also, various shank diameters isn't indicative of a rotary broach IMO.

Might be precision Allen keys.

 

[mmcmdl]

Hmmmmmmmmmmmmmm. Had the wrong initials . More coffee needed .