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Roller coated with polyurethane, low-noise operation, low rolling resistance, good floor preservation, high abrasion resistance, high cut and tear propagation resistance and non-marking, very good chemical connection with the rim. Rim of steel. Hub on shielded ball bearings.

Roller made of high-quality, impact-resistant Nylon 6, very low rolling and swivel resistance, smooth running performance on even floor, high abrasion resistance. Hub on shielded ball bearings.