Japanese Gt2 3mm Teeth Size 15 Teeth 6.3mm Bore Push Fit Pulley Timing Pulley smart car One is the IOREF that

One is the IOREF that allows the shields to adapt to the voltage provided from the board and the other one is reserved for future purposes

Built-in USB 2

micro USB connection

Accurate Voltage Monitoring: Continuously monitors battery voltage to ensure optimal performance

Japanese Gt2 3mm Teeth Size 15 Teeth 6.3mm Bore Push Fit Pulley Timing Pulley smart car One is the IOREF thatThe GT2 pulley wheel with 15 teeth or grooves is one of the best choices for 3d printer construction and cnc machines. GT2 pulley tooth profile is anti backlash. The rounded teeth of this tooth and belt are engaged together longer providing a smoother transition between teeth. Specification of timing pulleys Color: black Tooth number: 15 Tooth pitch: 3mm Bore diameter: 6. 3mm Flange: Single