A 1.25” diameter x 12” perch treehouse attachment bolt with a 3” diameter x 6” length collar. Made from very strong heat treated 4140 steel and powder coated with a nice textured black finish. Includes 1-1/4x12 zinc plated hex nut. At 24” overall length and 18 pounds this is the big daddy of our 1.25” diameter series.

Don’t forget the drill bits required to install these! 1-1/8'“ ship auger for hardwood, 1” ship auger for softwoods, and a 3” forstner bit for the collar

Drill Bits here

Tip:Drill the 3” diameter hole first, make sure you’re drilling level. Next drill the 1” or 1-1/8” hole(depending on hard or softwood) 6 to 7” deeper than the back of the first hole. For this 6” long collared TAB you’ll need to install the collar 4.5” to 5” past the bark layer. You can find more detailed steps at our Treehouse 101 page.

Still not large enough? Check out our PRO Series TABs here. They are 1.75” diameter monsters!