"The GoSports Ground Anchor provides a permanent, compact and extremely strong base for installation on multiple surfaces. Permanently mount into concrete or wood decks to securely hold your outdoor umbrellas and replace large bulky umbrella stands for a clean minimal look (umbrellas not included). The set includes all hardware required for concrete or wood installation (professional installation required, instructions included). The Ground Anchor can also be anchored into stone, brick, and tile (hardware not included - consult a contractor). The installation is permanent, but the minimalistic design provides a very stable base with a small 6.25 inch x 6.25 inch footprint which is a fraction of traditional weighted umbrella bases. The Ground Anchor is compatible with all round pole market umbrellas with poles up to 2.25"" in diameter and the set includes two umbrella sleeves (1.5 inch and 2 inch) for a better fit with smaller umbrellas. Also can be used as a ground anchor for sunshade or light string support poles so you can upgrade your outdoor living area. The premium polymer construction is virtually indestructible and rustproof to withstand all weather conditions. Secure outdoor umbrellas with complete confidence with the GoSports Umbrella Anchor!   Special Shipping Information:  This item ships separately from other items in your order.  This item cannot ship to a P.O. Box.  This item may be subject to additional processing days.   Item is not eligible for expedited shipping.    You may initiate a return for unused items within 30 days, if the items are in original packaging with all original materials included with the shipment."