The heavy-duty balcony patio umbrella clamp saves space on your deck, patio, or balcony. It measures 6.8 x 3.9 x 4.7 inches and is designed to be compact while providing solid support. Key benefits - Space saving design: clamps onto existing surfaces without adding bulk or taking up floor space. - Replaces bulky umbrella holders: a practical solution when you need a sturdy, compact alternative. - Strong and stable: built to resist vibration and shake for reliable shade. Specifications and construction - Clamp capacity: can be clamped to surfaces up to 2.8 inches (7 cm) wide. - Pole compatibility: fits sun umbrella poles of 1.1-1.5 inches (2.8-3.8 cm) in diameter. - Materials: base is heavy steel for strength; alloy steel body with gaskets and nuts for a secure, durable fit. - Anti-vibration and anti-shake design ensures a strong grip during use. Compatibility and applications - Broad mounting options: can be fixed to a Deck, Chair, Desk, Dock, Beach, Courtyard Balcony, Boat, or Tailgate. - Widely compatible with various setups where a sun umbrella is needed for shade. Use scenarios - Balcony or patio setup: clamp the umbrella to a railing or edge to create a stable shaded area without drilling or heavy equipment. - Boat or dock deployment: secure a sun umbrella on a boat rail or dock for on-the-water shade. - Tailgate or outdoor event: attach to a table edge, chair, or other sturdy surface to provide quick shade during gatherings. How to use - Open the clamp and position it on the desired surface up to 2.8 inches wide. - Insert a sun umbrella pole within the 1.1-1.5 inch (2.8-3.8 cm) range. - Tighten the nuts and gaskets to secure the pole firmly and stabilize the umbrella. This clamp provides a reliable, space-conscious solution for supporting a sun umbrella across a variety of surfaces while maintaining a strong grip and durable construction.