Base Rosca, also known as Ground Spike, is the ideal base to use in events held on the beach, ranging from surfing events, volleyball, football, or even themed parties. This base, as the name implies, with its donut shape has the ability to fix and hold securely on this surface of disaggregated rocks. This base has a height of 56cm and a weight of about 1.5kg, so it can be securely fastened so that the Advertising Flag structure remains stable. Recommendations .Do not drop the structure from a height greater than 60 cm