I have these silver plated BBs and some copper plated BBs from VOLV Precision. This rating is for silver plated electroplated. Copper is better, but still not very good. Also, I always give a star if the product description is misleading. Here's the thing. The product description not only lists the plastic canister, it even has a picture showing the height of the canister. But there is no canister. And the BBs are small. I measured five. Their diameters (in mm): 4.33, 4.37, 4.36, 4.33 and 4.34. Average 4,346. The standard deviation is 0.016. There are the best BBs at the best price.
Iverntech MGN12H Linear Rail Guide With Stainless Steel Carriage Blocks - 700Mm Length For 3D Printer And CNC Machine
9 Review
Goodyear Ultra Grip Ice SUV 235/65 R17 108T winter
35 Review
Iverntech MGN12 700Mm Linear Rail Guide With MGN12H Stainless Steel Carriage Block For 3D Printer And CNC Parts
11 Review
Iverntech 400Mm MGN12 Linear Rail Guide With 2 Black Stainless Steel MGN12H Carriage Blocks For CNC Parts And 3D Printer Upgrades
8 Review