The Anchor maintains the umbrella erect, preventing it from blowing with the wind. Simply screw the into sand, dirt or grass, place your umbrella in the base holder. Accomodates beach umbrellas using thumbscrew tightening. Installs without tools, and also work great at grass. Fits umbrellas with diameter of up to 32mm. Small and lightweight. Made from sturdy strong durable plastic. colour:Black & red material:plastic size:Floor insert 32mm, pipe diameter umbrella fork base 37cm Package Contents: 1 * Beach umbrella stand Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.