GT2 Closed Timing Belt (810 mm Length-6mm Width) P125

From the shop's description

Timing belts are a fantastic way to transfer rotational motion (from a stepper motor) into linear motion (along a rail) and these GT2 belts are excellent for the task. They have a special profile with rounded teeth which reduces slippage. Often used for precision 3D printers and CNC machines. This belt is 810 mm long and is 6mm wide. It comes in a loop but you can of course cut it down if you need a shorter length. Pitch: 2 mm Width: 6 mm Length: 810 mm