Joveco Hard Plastic Self-filled Patio Umbrella Base/Stand Caps remove easily for filling with water, cement or sand Self storing twist lock stem; Made of hard plastic, metal carry handle Fit 1.5" to 1.9" diameter umbrella poles Total dimensions: 31.5" * 23.5" * 6" Filled With: Water - 121.2 lb; Sand - 165.3 lb