Height = 28.7mm,

For 7/8", 22.2mm OD Engine Crankshafts, 

To fit blades with centre holes 15.7mm,

FOR ENGINE CRANKSHAFTS WITH OD OF 22.2MM ONLY !

FOR ENGINE CRANKSHAFTS WITH OD OF 22.2MM ONLY ! NOTE: THIS BOSS HAS A OCTOGON SHAPE WHERE THE SHAFT FITS !

FOR ENGINE CRANKSHAFTS WITH OD OF 25MM ONLY !

FOR SHAFTS WITH OD OF 20MM ONLY !

FOR ENGINE CRANKSHAFTS WITH OD OF 1" ( 25.4mm ) ONLY !

FOR ENGINE CRANKSHAFTS WITH OD OF 22.2mm ONLY !