Replacement spanner for water filter housing bowls.

• 4.5 inch diameter spanner is approximately 11.5 cm internal diameter. You'll need this for our Pearl and Oyster water filter kits that have the white housings.
• 6.5 inch spanner is approximately 16.5 cm internal diameter. You'll need this for our Moby's and Doby's that have the blue housings. 
• 5.5 inch diameter spanner is approximately 12.5 cm internal diameter. We don't have any filter kits that require these, but often have people looking for this size spanner. CURRENTLY OUT OF STOCK