These heavy duty 18 inch J hook rebar ground stakes are used to secure the bottom of our deer fencing to the ground to prevent deer from crawling under the fence. We recommend the stakes be placed approximately every 5 feet along the bottom of your deer fence. These stakes work well for rocky soils and unusually hard terrain. Our 12 kinked ground stakes can be used for most other ground types. We offer 12 or 18 inch rebar J hook ground stakes. These rebar stakes are available in packs of 20.