Blade holder hub right-hand thread direction left-hand thread lawn tractor lawn mower compatible STIGA CASTEL GARDEN Length (mm): 180 Blade holder (mm): separate flange Weight: 1,28 Kg For models: STIGA 1236 M , 1436 H , 1436 M , 1438 M , 1636 H , 1636 M , Estate Basic , Estate Collector , Estate President , Estate Senator , Estate Tornado , HTE 92 CASTELGARDEN TC92 , J92 Code: 25270020