The Bucket Base is a sturdy non skid / non marking ring that is designed to minimize sliding, toppling, and damage that can occur from pails sliding around Boats and RV's. We all use 5 gallon pails whether we are fishing, diving, carrying tools, or cleaning. The Bucket Base will stop problems before they happen. Fits Most 5 gallon & 3.5 gallon pails with base diameter of 10.25-10.5 inches.