DOUBLE THE PROTECTION FOR YOUR BIKE The chain lock is ideal protection against theft as well as against damage to the bicycle. Nothing is more annoying than irritating scratches on your bike. Who hasn’t suffered from scratches, scrapes and damage to paintwork caused by a bicycle lock on the bike’s frame? The Chain Lock IVEN Chain 8210 rids you of these worries the durable and highly flexible synthetic fibre sleeve and the smooth, soft material on the lock body itself prevent possible scratches and damage to the frame paintwork.