Galtech 40 pound decorative cast iron umbrella base features: 

• Commercial and residential applications
• 40 pound base
• 18" diameter
• Durable powder coated finish
• Available in black & antique bronze finishes
• All cast iron bases have protective feet on bottom of base
• Tube diameter 1.75 inches
• Ships with two tube sizes, table mount height and free standing umbrella height
• Multiple size bushing in tube allows for various pole diameters 
• Galtech strongly recommends a minimum 75 lb. base for all free standing applications
• A 40 lb. base is sufficient for table mounted umbrellas for umbrella 9’ and smaller