List of aftermarket helix angles


Looks like a Dalton machined helix here....engraved 033D or O33D and measures 49/39 to 50/40. Also has a PL and a -1 engraved on the side of it.
 
How about the Bender helix in their CK0070 kit? And anyone know why is $70 more for the selection with pipes?
Thanks
 


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