Review on ⚙️ Efficient Power Transmission with Degree Pressure Angle Polyoxymethylene Diameter Gears by Patrick Arnautov

The product corresponds to the description. It is manufactured by Stock Gear Inc. and resold by Small Parts Inc. Front width is 3/8 inch. The inner diameter of the gear is 5/16 inch. The hub diameter is approximately 11/16" and the hub protrudes approximately 3/8" beyond the gear on one side only. The hub is conventional and must be drilled or pressed onto the shaft for a pin or set screw. I bought 5 packs for 20 cents each. Three days later they cost $3.52 each! The same goes for many other gears I've bought. what happened to it