1½" SHIP AUGER

Heavy-Duty Ship Augers are intended to be used with our Heavy-Duty Treehouse Attachment Bolts (TAB).  Heavy-Duty and Standard TABs will require both a 3" Speedbor and one of the auger bits. During installation, the inside cutting plane shaves the hole radius for clean smooth holes without pressure. A hex shank provides a secure gripping surface for the drill chuck. The cutting edges on these bits can be resharpened.  A heavy-duty corded drill is recommend when installing treehouse bolts. Our Heavy-Duty TAB installation process consists of two stages: Drilling into the tree with the 3" Speedbor Self-feeding bit.  This is to fit the collar portion of the TAB into the tree. Drilling into the same hole with a 1½" or 1⅝" auger bit.  This is to fit the stem portion of the TAB into the tree. The inside cutting plane shaves the hole radius for clean smooth holes without pressure. A removable, replaceable feed screw draws the bit into the gummiest of woods effortlessly. A hex shank provides a