Gates POWER GRIP GT2 EPDM Belt - 2.4 meter closed loop

9mm, 6mm, 10mm, and 12mm Width
These are Closed Loop belts. That means that they are cut with the teeth straight, the result will be less walk than Open Loop belts. 
They are also EPDM, this allows them to be used a higher temperature than a regular belt, up to 145c.