Bicycles and parts for bicycles, particularly gear changes, derailleur gears, adjustment and control levers, free-wheel hubs, sprocket wheels, toothed trays and sprockets, free wheels, pedal bracket bearings, pedal bracket bearing systems, chains, pedals, pedal brackets, pedal-bearing arms, brakes, brake levers, brake shoes, saddle bars, saddle supports, fasteners for fastening saddle supports, fast-release devices for seats, handlebars, handles and handle sleeves, front parts of a front wheel, fork tubes, bearings, ball bearings, bearing shells, cranks, crank sets, cables, bicycle frames, bicycle saddles, bicycle spokes, bicycle tires, bicycle wheel rims, and parts thereof, accessories for bicycles, namely tapes for handlebars, bicycle bells, luggage racks for bicycles, chain covers, chain protections, bicycle kickstands, air pumps, and parts thereof