Free Wheel Hub/Sprocket Sprocket type free wheel hub found on many different types of gas and electric mini-scooters and vehicles. Thread Pitch: M1.0x34Right Hand ThreadFreewheel Direction: clockwise (with outside fixed, inside spins clockwise) Chain Used: 43-R1 Inner Diameter: 34mm Outer Diameter: 69mm including teeth Outer Diameter without teeth: 57.1mm Thickness: 14.7mm 16 tooth