eBay

Its easy to spot the cheap imitations on auction sites just by just looking at the bad pictures, this is a genuine Solas impeller.

Concord Impeller

Variable pitch offers both low-speed torque and all-out high speed in one impeller
Exclusive hub-end water seal keeps the nasty stuff out of precious parts
Enhances all-range maneuverability with no slippage in water hookup
Constructed of ultra high-strength, corrosion-resistant stainless steel
Mirror-smooth finish and polished hub resists cavitation
Impeller pitch is determined by casting, not bending
Original seal required
Choose impeller based on level of engine modification: Limited or Modified. See appropriate columns in chart.
Lower pitch impellers recommended for high altitude, pulling or freestyle applications.