10M Rubber Opening Belt 6mm Width+8pcs GT2 Pulley 20 Teeth Bore 5mm +4pcs Belt Locking Spring for 3D Printer

Very nice package of parts. Perfect for anyone building a 3D printer or other CNC controlled project from scratch, or upgrading an existing machine. Plenty of belt material and the belt tensioner springs are a nice plus. I would easily buy this again.

I think this timing belt and everything included is perfect for what it's designed for... However... I feel as though it is missing an important element that could make the kit absolutely complete! I think it needs a piece to connect the two ends of the timing belt together to make a loop. Despite this setback, the quality of the belt and the included pieces are excellent. They are great quality and performed just as I hoped they would. The belt itself doesn't have a lot of stretch (which is a good thing). The pulley/set screw hold firmly in place when tightened. I highly recommend this for 3D printers and any other DIY projects that require this motion!

Such a good value I bought it twice. I will purchase again in the future. Durability and accuracy are better than expected for the price.

This actually has a double belt. I expected it to only be one. But it's two that are attached and all you have to do is pull them apart on the perforated line. Great buy!

This belt works great. My 3d prints are coming out much cleaner. Beware, the pulley's are larger than the one that come with an Anet a8. If you use the pulleys in this kit you will need to recalibrate your machine or plan for your prints to come out bigger that you designed.

Stretches alot. Hardware is low quality and I've had nothing but low frequency hum on all of my printers I used this on (3).

Very useful for my project

Only half the pully wheels where in the package and none of the spring clips.