GT2 Aluminum Timing Belt Idler Pulley Bearing 20&60 Teeth Width 8mm Born Synchronous Wheel, with a Perimeter 200mm Width 6mm Belt and a M4 Allen Wrench, for 3D Printer.

I do make my own things sometimes out of what I find. I'm building a small low powered tablesaw for small cutting tasks for my hobby projects. I needed 1/4 inch shaft hole for the pulleys and a strong enough belt that should hold up to constant turning under torque. Cannot say for original use quality. But I hope it will work for my use. It may fail or it may turn out to be a little wood hungry tiger. For the price, It cannot be beat for my experiment. Also may do well for another Idea that I want to do. When I find things like this, I buy it. Cause I do build a lot of stuff. If it fails, I could buy more and double or triple it on the shaft. Or I can increase the torque by loading one onto another. I just know that the saw that I bought didn't have enough power on the motor to turn the blade directly to cut more than balsa wood. And it was too small to cut anything more than two inches wide. And no, I cannot afford a larger full size table saw, and don't have the space to store one.

To short length of belt, missing one smaller Allen key.

I used this to drive a home made Auto Die Filer using a drill motor. I was amazed at how powerful this little set (tiny rubber belt and light weight pulleys) was in the end. It was just barley large enough to do what I needed but it did it like a champ!

Great value for the money

I love these for 3d automation.

Not that it says it does, but FYI the pulley is too big for a Nema 17 stepper motor. You can screw it on there but then it will be lopsided. However the idler and belt worked great for my purposes.

I'll have to now bore the inside of this pully to be a true 6.35mm because its shy and now won't fit my impeller prop.

Ultra ultra ultra small.