All cylinder bases require additional weight in the base when using to prevent the table from tipping over. OFS provides instruction sheets and clear 6 ml bags with base. Customer must provide dry sand for the additional weight. This base requires 32 lbs. for 54" round top, 70 lbs. for a 60" round top, 140 lbs. for a 54" square top, and 160 lbs, for a 60" square top.