This set of 4 circular ballast weights will maximize the stability and safety of your gazebo, barnum, tent, marquee, etc... In windy conditions, you can attach a weight to each foot of your gazebo.Characteristics:- Set of 4 weights ballast for arbor, tent, parasol, pavilion, marquee, etc... guarantee of stability and safety even on windy days - Suitable for base tubes of 2 to 3 cm in diameter - Ballast / cement-based filling for optimal stability and black polyethylene container- Note: you can buy more weights and lean them on a column to increase stabilitySpecifications:- Color: black- Main materials: cement and polyethylene- Diameter: 20 cm- Height: 4.5 cm- Notch dimensions: 11.5L x 3.2L cm- Ref. : 840-041