30" Double Disk Anchor,3/4" Shaft, 30" Double, 4" Disk Earth Anchor With Double Fastening And Tensioning Head For Use With Straps. Designed To Be Augured Into Extremely Hard Soil Where 6" Anchors Will Not Suffice. Recommended For Soil Classes 2 & 3. Contact Your Local Building Inspector For Your Local Code On Anchors. 4 Anchors Per Pack.