General description The Umbrella Clamp Balcony Holder is a versatile and durable solution for securely holding your parasol on balconies, terraces, and patios. Made from robust black steel, this clamp is designed to fit various railing types and sizes, providing stability and convenience for outdoor use. Technical specifications Dimensions: Height x Width x Depth: approximately 15.5 x 11 x 10 cm Inner diameter: 3.8 cm Clip adjustment range: 0-6 cm Installation No tools required for installation Attach to railings, tabletops, decks, or grandstands with a thickness of up to 6 cm Tighten screws to secure the clamp Place the umbrella on the metal tube with an inner and outer diameter of 4 cm and tighten the screws Usage Suitable for various garden and patio parasols Can be used on balconies, terraces, gardens, parks, piers, decks, resorts, and beaches Portable design allows for easy transportation and outdoor use Other information Features an opening at the bottom for rainwater drainage