A WIN-WIN... Save the floors while reducing the classroom noise. Simple and inexpensive but highly effective solutions for protecting costly floor surfaces. Easy to install with immediate results. ENERGI Felt Tip Floor Saver Caps that stop classroom chairs from grinding grit and grime into freshly polished floor surfaces. Same goes for the ENERGI Single Wheel Neoprene Chair Casters. All mobile chairs come with caster wheels meant for carpeted floor surfaces - using these on a waxed or polished floor will do immediate and potentially permanent damage. The affordable and effective solution is the ENERGI Single Wheel Casters. With non-marking wheels and enhanced ball-bearing actions will ensure your floors have that added measure of protection!