12T OR 16T single speed Freewheel gear

NOT for Single Speed and Track Bikes.

Has the ratcheting mechanism - but no internal threads

Useful for making a go-cart or a scooter.

Working on getting  more bike gears and clusters and such.... hang on.

34mm ID with a set screw means that for non-metric axles you will need some shims or a sleeve.

(34 mm = 1.33" so a bit larger than inch and a 1/4 and less than inch and 3/8, ok?)