shimano does make 3/32" freewheels. that's the one i have now. although shimano's quality is not bad, they not rebuildable. for the price of buying and stocking 4 or 5 freewheels, you may as well buy a white industries freewheel. they are completely rebuildable and is designed to last forever. i don't have one yet, but i'm saving up for one. the sound it makes is super good too.