George J. Marshall, Inc. - Plastic Beach Umbrella Anchor - 1 Unit (Color: Assorted) Fits umbrellas with pole diameter of up to 1.5" and 13.5" deep. It remains firmly in the sand, or soft ground, to secure a beach umbrella against winds over 40 mph. Its spiral flange, built on a round cone shaped trunk, dig easily into sand. The comfortable handles increase torque to allow users to turn the unit easily. Accommodates all size beach umbrellas using thumbscrew tightening and installs easily without tools.