Davey QB Series 2.5hp / 1850w Variable Speeed Pump impeller with Keyway - suits QB25013 only

Davey QB Series 1850w / 2.5hp impeller to suit QB25013 variable speed pump only. 

This is a unique impeller that has a keyway that slips over the motor shaft that has a long key. (it is NOT threaded) 
A seperate o-ring and threaded nut seal secure the impeller in place. (not supplied with impeller)

120mm diameter x 6 vanes @ 13mm wide vanes. 
May be stamped on the back with B358-02 

Do NOT confuse with other impellers also marked with the same number. Check dimensions and in particular, check for the keyway / no thread.