This GT2 timing pully has 20 teeth and is designed to be an idler in a belt system. Unlike a standard GT2 pulley, this one has a set of bearings pressed into the center bore. The bearings have a center bore of 5mm and allow the pulley to spin freely on a stationary shaft or bolt. The pully is designed to work with all forms of 6mm and 10mm wide GT2 belt and Steel Core GT2 Belts we carry in stock.
They don't have the right item but when customer call for replacement they will say they don't have for this statement they will hold the customer call they will put in mute later they will say they don't have all are faulty item I've ordered for micro SD to micro SD but they have shipped SD to SD they are not ready to listen to the customer need also.
It is a great product for what it offers. The digital zoom is where it falls short in its clarity being digitally zoomed, but not very bad.
The optical lens is is brilliant.
Overall a great product at this price point.