Berkey Maintenance Kit for Stainless Steel Units - Includes FREE Trouble Shooting Booklet and Red Dye Keep your Berkey water filter in tip top shape with this convenient maintenance kit! Fits only stainless steel units. Each Kit includes: Berkey Trouble Shooting tip Booklet, 1oz bottle of Red Dye (for red dye troubleshooting test on Black Filter Elements) 2 Berkey approved (blue) Scotch Brite scrubbing pads for cleaning Black Filters, 1 replacement spigot 1 pair of Black Filter Elements wingnuts and washers, 1 spare priming button, 2 replacement hole plugs and 1 replacement knob