Bat Rolling Machine VS Panther 500 Compression test 

Qere can I buy a roller ?

Of what materials are msde the rollers? And size?

I do understand the comparison as I have used most bat rollers on the market. You should have done the test with the Xtreme bat Roller IMO. If you wanted "rigidity" for Bbcor bats I would suggest a harder plastic (which I do have a special made roller with such plastic)....if rigidity was an issue. Thing is if you put 1/2 turn pressure with yellow roller machine and full turn pressure with white roller machine the actual compression on the "nylon roller" (bat) should be more on the white roller or at the least the same. More turning = more pressure. Now a Bbcor bat does give a little and I understand the argument of a more rigid roller but if the roller can handle the pressure there is no pressure lose. As in one machine will flex the bat just as much as another the only difference would be the how many turns is needed to get to that pressure. This may be a little hard to follow for most but I am sure you get my drift. This is not a real issue unless the machine cannot handle the pressure; which all machines will be able to handle the pressure it just comes down to how many times it can handle that pressure. This is why you get the more expensive machines if you roll a crazy amount of bats like myself (BigDawg). The everyday roller will not break a machine because of bat rolling only the guys who roll 10,000 bats a year or so will break them.

You couldn't turn the Panther 500 handle if you wanted to as it is over the table and yours the handle is hanging over so it can turn..

where can I get replacement rollers