The best quality, competitive price, fast delivery, strong packing. Sizes: dia.3 5/16" at the top of base, height at 8", and dia.12" at the bottom of base.Material: casting aluminium with strong alloy.Weight: 4.30kg/pc.Finishing: Black powder coated.Packing: in wooden case to be stacked.Delivery time: within 25 days after order confirmed. Rail base