Use this static bracket to support a beam from a single TAB or lag bolt. For treehouses spanning across three or more trees a static bracket on one tree and floating brackets on the other trees should be used to allow the trees to move independently. This will reduce stress/damage to the trees and your treehouse. ONLY for 1.25" diameter lag bolts or 1.25" diameter treehouse attachment bolts. Tough, corrosion resistant, textured powder coat finish. Does NOT include the TAB or lag bolt