Blade support hub Compatible with HUSQVARNA lawn mowers for lawn tractors FOR MODELS: JET 46R, MASTER 46, ROYAL 46, ROYAL 49S, ROYAL 49SE CHARACTERISTICS: Shaft diameter: 22,2 mm Insertion depth: 22 mm Reference code: 30-706 Original code: 512 73 90-0, 531 00 50-28 HUSQVARNA