Some people got crap quality, but mine came in fine shape. They have some rough bits on the sides that can be easily filed away. These PBT bars weigh about 6.7 grams compared to 5.65g for the original ABS ones. They have a pleasant extra-fine sandpaper texture on top. The widths all around are comparable to the ABS bars, about 0.45 - 0.52mm at various points - my 2 bars are not warped at all and have no staining on them. The fibers of the PBT can be seen in magnification. They both fit onto my board stems without problems, clean click on they are securely on. For the price these are good enough dudes. You guys are being overly autistic complaining about them.