Planters Are these JD openers for Liquid or Granular Fertilizer?

[Luremaker]

Anyone know if these JD Double Disk Fertilizer Openers are for liquid or granular fertilizer? I am modifying my 2 row JD 71 planter and thought these might work.

 

[Duffster]

Dry.

They could easily be used for juice too.

 

[Luremaker]

Dry.

They could easily be used for juice too.

Thanks Duffster, dry is what I wanted to hear. They should work with my new to me Cole Side dresser.