Fits earlier Max Props 

For use in saltwater

Max Prop 63M, replaces MP02 or A63 Old Style

Size, distance across triangular base 63mm (from one point straight across to the other side)
Spacing between hole centres 46mm
Recess diameter 39mm
Weight 300g

Max Prop 70M, replaces B70 Old Style

Size, distance across triangular base 70mm (from one point straight across to the other side)
Spacing between hole centres 50mm
Recess diameter 42mm
Weight 435g

Max Prop 83M, replaces C83 Old Style

Size, distance across triangular base 83mm (from one point straight across to the other side)
Spacing between hole centres 60.5mm
Recess diameter 46.5mm
Weight 860g