Ultimate Sweater Machine Cast-on Combs

IMPORTANT NOTE!!  Please be aware, I am soon discontinuing the cast on combs simply because I can no longer find a manufacturer to produce them.  My current one which is across the country from me has raised the price repeatedly to the point of almost no profit and then they said they no longer wish to make them.  A great product and badly needed/wanted by the USM users worldwide.   
The remaining sets that I have left have random staining.  (does not affect usage in any way).  Please see the pictures of examples. After being laser cut, the cast on combs go through a polishing procedure.  The procedure uses heat/acid/water bath, when pulling the combs out the bath they are dried very quickly to avoid water staining.  If they are not dried all the way they will stain.  It seems that each batch I got had a few stained ones which I set aside.  I am now out of all inventory except this pile with misc staining.  Some are better and some are worse.  Again this is NO WAY affects its functionality and perhaps over time the stains will fade.  So for those who are still wanting these cast on combs they are limited.  At current count I only have 20 sets left.  
Are you sick of using the plastic hem that came with your machine? 
Quality Stainless Steel Cast-on Combs for the Ultimate Sweater Machine, Incredible Sweater Machine, EZ Knittr, Fashion Knitter, Original Bond, Classic Bond, Classic Plus, Baby Lock, and any 8mm machine.  Easy to use and will last a lifetime! 
Sold as a set of 2.  Set will fit an entire 100-needle bed.  Manufactured in the U.S.A. and ships worldwide.  Here is a video showing the cast on comb casting on: https://www.youtube.com/watch?v=Fspo7vOIdT4
 
*Please note, I am currently not shipping orders to Russia, Ukraine, So. Africa, China and Chile.