Castor 75mm Lock and Break - Ball Bearing Wheels $27.80 75mm Castors for Motor Mover 400 The Ball Bearing technology makes moving the bike even easier. These castors are "Total Lock and Break". This means that when the break is activated the swivel and wheels are locked. This provides extra rigidity when the breaks are applied. The castors are very tough maintenance free and can carry 80kg each. The castors are sold individually. Four castors are required per mover. View Customer Feedback List price: $22.00Weight: 0.6 kgDimensions: 130 mm × 80 mm × 100 mmSKU: CBB75LB