Including: a pair of wheels, quick release, rim tape Matieral: Alloy Rims : KINLIN, XR270 or NBR, from Taiwan;rim compatible for V brake ,disc brake Hubs: ECC, 7075, black ,front 2 bearings ,rear 4bearings, hub spacing has front 100mm rear 135mm Size: 451 20" 1 1/8" (about 22") or 20" 406 (it is standard 20") Weight: NBR wheels 601g +706g, XR270 wheels 655g +780g ( 100mm /135mm ) Brake：DISC Brake, V brake compatible.
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