Continue to use your posthole digger to the fullest with the help of the Link Replacement Handles By Seymour 864-21 66754 48 in. Round End Posthole Digger Replacement Handle. This replacement handle can be used with posthole digger heads that accept round ends. Fabricated out of the finest quality American ash wood, the handle is flexible, increasing your leverage to help you get the job done. At the same time, the wood is ultra strong and finished with a protective clear lacquer coating to ensure durability.