Sunspecs of Ocean City, Inc. - Plastic Beach Umbrella Anchor - 1 Unit (Color: Assorted) Each anchor measures about: 15 inches x 10 inches x 3 inches Fits umbrellas with pole diameter of up to 1.5 inch and 13.5 inches deep Easy to use: Accomodates beach umbrellas using thumbscrew tightening. Installs without tools. Easy to use: Drill into sand or soft ground by turning the handles Other uses: pole anchor for volleyball net, flag, tent, pet leash, kite, etc.