Looking for more durable poles and poles that are less likely to crack, are structural, and are weight-bearing, unlike the other bamboo poles? Known as "Iron Bamboo", our Solid Structural Bamboo poles are Tam Vong species, the strongest bamboo species available. Tam Vong solid bamboo has a tensile strength greater than steel, making it an ideal selection for exterior and interior applications. Unlike other bamboo species, the wall density of Solid Structural Bamboo poles resists most splitting from screws and nails, heat, and the elements. This makes them the ideal choice for outdoor use in hot, dry, and damp climates. Applications may include interior and exterior wall and ceiling treatments, batons/purlins for your tiki hut, fencing, finished millwork, handrails, and the roof of your pergola. The poles in this 6-pack are 1-2" in diameter. Solid bamboo poles are a natural product that can taper, varying from 1 to 2 inches in diameter.