About the Product： VORON DESIGN Aluminum Alloy 80 teeth 2M/2MGT/2GT Synchronous Timing pulley anodic oxidation Red and Black Bore 5mm Pitch 2.0mm 80-2GT-9 BS for Width 6mm Linear Motion Small backlash Positioning Accuracy 3D Printer 80Teeth 80T Features： 1.The PowerGrip GT2 system is an extension of the HTD system with greater load-carryingcapacity. HTD was developed for high torque drive applications, but is not acceptable for most precision indexing or registration applications. 2.As smaller diameter pulleys are used, the clearance required to operate properly is increased.HTD drive clearance, using small diameter pulleys, is approximately four times greater than an equivalent GT2 timing belt drive. 3.circular arc tooth profile, tooth space is small, suitable for straight line driving.