Specification Brand : SLIIMU BulletPoint1 : Flexible Universal Fit: Suitable for umbrella poles with 1.4 - 2.1 inch diameter and square railings/balusters from 0.9-2.3 inches wide. Adjustable knob screws allow precise width and aperture customization, ensuring a secure fit for small to medium umbrellas, flags, fishing rods, or torches. Measure your railing before ordering for hassle-free use! BulletPoint2 : Heavy-Duty Rustproof Construction: Crafted from thickened steel with a black powder-coated finish, this clamp resists rust, corrosion, and outdoor wear. The durable material withstands wind and rain, providing long-lasting stability for your patio, beach, or boat setup. BulletPoint3 : Tool-Free Quick Installation: No tools needed! Simply attach the clamp to railings, benches, fences, bleachers, tailgates, or docks by tightening the knobs. Adjust effortlessly to move between locations, perfect for temporary shade at BBQs, sporting events, or deck gatherings. BulletPoint4 : Space-Saving Design: Eliminates floor-standing bases to maximize patio, balcony, or deck space. The compact clip-on design offers instant shade without blocking walkways, ideal for small outdoor areas where space is limited. BulletPoint5 : Versatile Outdoor Applications: Works across diverse scenarios: secure umbrellas on deck railings, attach to boat rails for marine shading,clamp to tailgates for camping shade, or fix to beach chairs. Adaptable for both residential and commercial use in courtyards, docks, or poolside areas. Color : Black ItemName : SLIIMU Heavy Duty Patio Umbrella Clamp - Adjustable Deck Railing Umbrella Mount | Rustproof Steel Holder for Deck, Beach, Boat, Tailgate & Balcony | Tool-Free Installation, Space-Saving Design ItemPackageDimensions_Height : 17.2974 centimeters ItemPackageDimensions_Length : 14.1986 centimeters ItemPackageDimensions_Width : 16.4084 centimeters ItemTypeKeyword : free-standing-umbrella-racks Manufacturer : SLIIMU Co., Ltd. ModelName : 12 ModelNumber : 1 NumberOfBoxes : 1 PartNumber : 1 PowerSourceType : hand_powered ProductDescription : 1 SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 56101600