1 pocket,portable,light 2 derailleur:shimano,6 speed 3 novel ... gears 6-speeds1. Rim Size: from 16" 20"2. Bike Frame: chrome-molybdenum steel and painting, thicker argon-arc ... varieties of bicycle for mountain bike, BMX, folding bike, city bike, All suspension bike, women bike, bike spare parts and other products ... some bicycle parts as your requirement. 20'' pocket BMX Performance bike Bicycle for sale