Blade kit with original blade holder hub for GRIN traction lawnmower mowers model HM46A - PM46 PRO Blade size: Blade length: 460 mm Central hole diameter: 19 mm Side hole diameter: 5 mm Traction blade holder hub size: Hub height: 100 mm Upper diameter: 47 mm Lower diameter: 62 mm Upper hole diameter: 20 mm Lower hole diameter: 8 mm Traction height: 25 mm Traction diameter: 47 mm Traction hole diameter: 20 mm Blade CODE 46 : BT-D46-0001 CODE Traction blade hub: BT-TR-0007