That’s what I was thinking. I figured there must be a reason.
Personally, I wouldn’t buy something like that and start taking it apart to jerry-rig it…but that’s just me.
$4 and some glue to do exactly what the factory does. It sure beats the time and money I’d spend making a complete set from scratch. I’d probably break more than $4 in drill bits drilling the holes for the cables.
Cutting down the Harmonies to make them 16" is beyond where I’d go for rigging.
Realistically I can use DPNs. Circulars are matter of convenience until there is some bulk to the item.
The “full set” from KP was to beat the shipping. I have the single 16" size Walmart has. The rest of the stores with knitting stuff require a longer drive than what I do for spur of the moment.
The smallest you can do with the Needlemaster is 20". That is usually too big for a hat.
Not for my head 
Thanks everyone. Looks like I’ll get the DPNs and see what I can turn out in the lathe for circulars.