Our Flat Tread Performa wheels offer the benefits of both hard tread and soft tread wheel materials in a single solution. Like a hard tread wheel, Performa rubber rolls easily and is very durable. Like a soft tread wheel, Performa Rubber rolls quietly, protects floors and resists impacts with a cushion ride. Performa Rubber also features maximum durability, low temperature resiliency, resistance to chemicals, water and steam, and deflects floor debris such as metal shavings. The non-marking thermoplastic elastomer tread is permanently bonded to a ribbed polyolefin wheel core.