These Rebo heavy duty ground anchors are designed for anchoring wooden play structures firmly to the ground coming complete with fixings to securely fasten them to the base of a swing sets wooden legs Sold in a set of 4 and coming complete with screws and washers, these ground anchors can also be concreted into the ground Only the metal anchor should be concreted into the ground, no wooden parts of a swing set or other types of wooden play equipment should be concreted into the ground as the wood will rot.