G&G Clothesline uses an integrated tube through tube sleeve, a method we have used successfully for over 40 years. The pole sections use a 1.9" diameter thick wall sleeve pressed in and staked at the end of the 2" diameter pole. The receiving end of the mating tube is machined to accept the 1.90” tube with a “snug fit”. The sleeve joint is actually stronger in bending resistance than the parent pole material. The sleeves provide a quick and tight assembly of the pole sections, providing one continuous rigid Center Post.