35 mm mini heavy duty swivel castor bolt hole brakewith back hole fixing 10 mm with brake yellow polyurethane wheel with ball bearing Compact heavy duty castor in miniature format 120 kg load capacity in the smallest possible space. The yellow polyurethane wheel runs quietly, is gentle on the floor, and offers good grip on both smooth and rough surfaces. Mounting via back hole 10 mm, no welding or drilling required. The integrated brake securely locks the castor in any position.