Professional range - Blade LH, turns to the right for lawn tractors AGS, AXXOM models Park 200, 300, 400, 500 - VIKING model MT640 - Mowing deck 102 cm - L: 520mm, central bore: 16,2mm, pitch center: 74,5mm. Replaces original: 505 900 031, 0505900031, 6124-702-0105, 532050422543, 6124-702-0106.