Land vehicles; Apparatus for locomotion by land, air or water; Drive gears; Driving belts for land vehicles; Clamping rollers being parts for land vehicles; Parts for land vehicles, namely, shaft couplings, transmission shafts, machine belts; Parts of land, air and sea vehicles, namely, shock absorbers, shock-absorbing springs, suspension springs, air springs; Body shells made from polytetrafluoroethylene; Rubberised chain wheels for land vehicles