Tire Iron BeadBrakR slide show - BestRest
Plastic rim protectors keep the tire irons from marring the rim.  They snap on the rim and are held in place by friction, and also by the lanyard tied to a spoke or the rotor.

Plastic rim protectors keep the tire irons from marring the rim. They snap on the rim and are held in place by friction, and also by the lanyard tied to a spoke or the rotor.