110 tooth 70mm diameter 10mm bore GT2 gear Can work with gt2 timing beltM4 screws to hold it to its boreI printed at 0.3mm layer height with 30% infill with 2x line multiplier on cura.Cheap to makeIt is pretty solid and easy to print and no need for support.It has 10mm boreI printed with esun PLA+ and it is quite strong. If you want to change the bore that in the gear leave a comment