Frame: AL 6061 Frame, 21SP
Fork: Similar to AL Crown, Electroplated Upper Tube
Handlebar: 22.2*31.8 Sandy, DISC Brake          
Saddle:Confortable saddle
Pedals: Plastic Pedal/ Semi AL Pedal
BB Set:waterproof BB Set
Hub: Steel, DISC Brake Hub
Rim: 20*1.5 Double Wall AL；  24*1.5 Double Wall AL   
Tires: 20*2.125 BK  / CHAOYANG 24"*2.1 BK

F/R brake: DISC Brake
Speed:21-speed
Shifter: SHIMANO RS35 21 SP; /  SHIMANO EF51 21SP
Front Derailleur: Local QD35 ED /  SHIMANO TZ30
Rear Derailleur: Local HG26A  /   SHIMANO TZ50
Chainwheel: ED "Fish" Shaped Crank 24/34/42T ; 24/34/42 Silver D 
Freewheel: Local, 7SP, Index
Chain:KMC single speed chain