Contains: front +rear wheels ,rim tape,skewers, cassette spacer, spare spokes
Matieral: alloy rims + aluminum hubs
Rims: SR42 ,42mm,SILVEROCK ; SR40 40mm
Spokes: Sapim or Pilar
Nipples: brass black
Hub: 6pawls ,2/4 bearing ,noise sound; Front 24holes ,rear 24Holes
Hub: Front 100mm, special for BIRDY, rear 135mm
Weight:: SR42 TYPE appro 1634g/set( 24holes), SR40 TYPE 1568g
Support: Rim Caliper brake , 8- 11 speed cassette type, such as BIRDY NEW CLASSIC / PLUS series
Fits for 20in 406 type ,42mm rim suggest max tyre clearance 20x1.75, SR40 Rim suggest max 2.0 tyres.
Some birdy folding bikes is 100 /135mm
Origin: Made in China, build by SILVEROCK
