This 4 piece set of base weight is the perfect complement to any pop up gazebo or tent to use with square poles and weighted with 25kgs each it is heavy to make sure your tent is secure to the groundits a quick and effective way to ensure your tent does not topple or fly away in high winds it strengthens the tents stability for added wind resistance it is suitable for 20 x 20mm to 30 x 30mm square tube of folding tent it is essentially a 4 piece set providing 4 weighted bases for fixing