Question on the differences between clear coats

Brenson Humphreys

So the automotive clear coat that is offered in the store is a 2.1, although on beat for half the price I can get a 4.1. This is the only difference I can see between them. Seeing that I have no idea what that really means to the look of the final product I came to the forums to see what everyone else thinks. It shouldn't make much deference in the metalizing effect from what I can tell. Any advise you guy could render would be great.

Brenson Humphreys

http://bit.ly/1gZRt9a

Mike Turner

If I'm not mistaken that 2:1 or 4:1 is the ratio of clear to catalyst.  I use a relatively cheap Omni clear from the auto parts store in my town and it is 2:1.