What are these heads?

[txjourneyman]

I found these at a yard sale. $2 for 1/2 a dozen. All I know is they weigh 125 gr and I have to sharpen them. Can anyone give me more info on them?

[Schultzy]

They look like they might be some sort of a zwickey possibly. Not sure.

[Arthur P]

They're old Pearson skeleton ferrule heads from the 60's. Maybe as early as the 40's? The ones that inspired the Ribtek design. I've got a few of 'em myself.

[txjourneyman]

Thanks. I'll give them a try next time I make up some cedar shafts.