... nexus 3 speed Electric Tricycle, Our main productsinclude Electric bicycle,bicycle,bmx&freestyle bicycle, beach cruiserbikes, folding bikes, city bikes, kids'bikes etc ... fork:steel fork wheel/rim:front :20 inch; rear:26 inch,double walls alloy rims;tires:Front 20"*1.75, rear 26 x 1 ... .75 inch; derailleur:shimano nexus 3 speed 1>. Our factory has 10 years experience in bicycle ...