1.Training wheels and the support: very strong;    
2.Crank:CP or ED or UCP;
3.The tube: very easy to assemble and intensify;       
4.Brake: F/R Caliper Brake or R band brake;
5.Handlebar and stem: 4-points handlebar,CP, argon-arc welding Φ22X0.8-1.2mm;
6.Tyre:Black tyre 12"x1.75,16"x1.75, 20x1.75 or 1.95 2.125 air tires or EVA tire;
7.Basket:Plastic, can be customized
8.Brake lever and grip: good quality;
9.Saddle: good leather, common or spring /plastic/imitation leather/ plate PVC TOP;  
10.Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding;
11.Bike Fork: steel and painting, co2 welding steel /suspension fork
12.Rim: 12" 16" 20" steel alloy or aluminum;
13.Chain wheel & crank: 12"24T×89/1628T×102/20"28T×127 CP/ED
14.Flywheel: 16T/18T/20T Brown/Black/CP;
15.Mudguard: plastic;
16.Chain: full chain or 9-form chain cover;
17.Pedal: plastic, with reflector, without ball, PP/TPE/ALLOY;
18. B.Bparts:3pcs B.B axle B.B cup;
19.Paint: 3X/4X painting;
20.Color: red, black, blue, green, yellow etc. any color you like;
21.Attachments:training wheels,basket;
22.Packing: export standard packing    SKD/CKD/AB    85%SKD/50%SKD 1PCS/CTN or 4PCS/CTN;
23.Green paint is good for health ;