Slip DiscsThe Scotty Slip Discs allow you to make micro adjustments to your rod holder or any of our Scotty Rod Holder Height Extenders. These discs when placed between the rod holder post and Scotty Rod Holder, allow you to obtain infinite adjustment angles. Now you can adjust your rod holder to that perfect fish fighting position!WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.