Institutional Castor - Synthetic, Series 5320 Tente Series 5320 LEVINA single-wheel bolt-hole castors are manufactured from high grade synthetic materials that are generally resistant to all detergents and disinfectants currently available. They incorporate a double ball bearing precision swivel head, and grey TENTEprene (thermoplastic rubber) non-marking tyre. M10 bolts are included with the LEVINA castors which can be removed without removing the castor wheel. The polypropylene wheel castors can accept a static load of 150kg, and a dynamic load of 75kg.