Blade for lawn mower mower ADAPTABLE TO Rider 970 Features: Length: 350 mm Centre hole diameter: 10 mm Side hole diameter: 8 mm Side hole centre distance: 61 mm Code: 30-190 Reference code: 506 75 15-01 531 00 50-10 535 42 03-01 Husqvarna [AYP, FLYMO, MARAZZINI, MURRAY, NOMA].