29" mag wheel set f and r 100mmx120mm for rotary single speed flywheel /700c magnesium wheels/black/disc brake - for beach cruisers, mtb's, and gas powered bicycles donsp1986 designed mainly for motorized bicycles;do not need adapter, sprocket only needed;<br>magnesium wheels excluding chain drive sprocket<br>light and very durable. 29"/700c size wheel;<br>axles included;easy intall sprocket on mag wheel,<br>attention: standard 9 hole sprockets 24t to 60t in kit do not work on this magnesium wheel, buyer need drill 6 holes in middle to make sprocket fit on the magnesium wheel or buyer buy our multifunctional sprocket which fits well on our magnesium wheel<br>easy intall sprocket on mag wheel