No

Wheel coated with soft polyurethane thread, low-noise operation, low rolling resistance, good floor preservation, high abrasion resistance, high cut and tear propagation resistance, non-marking, very good chemical connection with the rim. Rim of die-cast aluminum. Hub on shielded ball bearings with central spacer. Heavy duty castor in zinc-chromium plated pressed steel turning on double rim of balls in temperate thrust bearings. Assembled with self-locking nut and plastic dust protection.

Wheel coated with rubber, high operational comfort, low-noise operation, low rolling resistance, good floor preservation, high abrasion resistance, high cut and tear propagation resistance, non-marking, very good chemical connection with the rim. Rim of Nylon 6. Hub on ball bearing. Medium duty castor in zinc-chromium pressed steel, turning on double rim of balls. Assembled with self-locking nut and plastic dust protection.

Wheel coated with polyurethane, low-noise operation, low rolling resistance, good floor preservation, high abrasion resistance, high cut and tear propagation resistance, non-marking, very good chemical connection with the rim. Rim of mechanical cast iron. Hub on shielded ball bearings with central spacer. Heavy duty castor in zinc-chromium plated pressed steel turning on double rim of balls in temperate thrust bearings. Assembled with self-locking nut and plastic dust protection.

Wheel coated with solid rubber, low-noise operation and very good floor preservation. Rim of high quality, impact-resistant Nylon 6. Hub on plain bore. Medium duty castor in zinc-chromium plated pressed steel turning on double rim of balls. Assembled with self-locking nut and dust protection.