The Gemini rear wheel is a solid, dependable option for those riders looking to upgrade their main drive unit. Comes with the Gemini "Wikid" rear hub, laced into a Gemini double wall alloy rim using 11g spokes, 12mm bolt style thru axle, sealed bearings, a 7mm wide disc rotor spacer and bolts, plus three 8mm bolts to attach your drive sprocket. This is for the rear wheel only. As always all GEMINI products come with fantastic customer service, after the sale. ..NOTE: some frame drop outs will need to filed out 2mm on the bottom of each drop out for the 12mm axles to fit.. The rear wheel is dished from Gemini for a 5-1/16" wide drop out, like the Felt faker, which is pretty much standard in the motorized bike community. IF YOU NEED THIS WHEEL DISHED FOR THE PHATMOTO ROVER FRAME, SEND ME AN EMAIL AFTER YOU PURCHASE ,TO SPECIFY IF YOU NEED IT DISHED FOR SINGLE SPEED OR 7 SPEED VERSION. SINGLE SPEED ROVER ALSO NEED TO PURCHASE THE FREEWHEEL THREAD EXTENDER. If no email is received, the wheel will be dished for a standard gas bike frame..