DiameterThicknessSharpening
20"3,0 | 3,5 | 4,0 | 4,5 | 5,0 | 6,0External
22"3,0 | 3,5 | 4,0 | 4,5 | 5,0 | 6,0External
24"4,5 | 5,0 | 6,0External
26"5,0 | 6,0External / Internal
28"5,0 | 6,0 | 7,5External / Internal

 

Drilling OptionsLeveling harrowsø 1" |   1.1/8" | ø 1.1/4" | ø 1.1/2"
ø 1" x ø 1.1/4" | ø 1" x    1.1/8"
 1.1/8" x ø 1.1/4" 
Plowing harrows ø 1.5/8" | ø 1.3/4" | ø 2"
ø 2.1/8" | ø 2.1/4" | ø 2.1/2"