I purchased this 650mm laminator to apply transfer paper to acrylic sheets for laser cutting/engraving. I took it apart and changed the rollers around so the bottom roller is the drive roller (paper to feed from underneath). I was pleasantly surprised to find sealed roller bearings, machine screws and tapped screw holes in what appeared at first glance to be just sheet metal screws. They are only 3mm though so go easy with torque or they will strip.It was no problem to swap the rollers around. The bearing housings are different sizes but the axle diameters are identical. The handle is plastic, not metal as the product image showed, but it does use a metal bush insert so it's probably strong enough (time will tell). The rollers appear to be true and consistent diameter.There are better made machines out there, no doubt, but for the money, I don't think you could do much better than this. It is made well enough to do the job it's supposed to do for a long time and it is very economical compared to alternatives.