SkimLite EliptLock 3 Piece Heavy Duty Silver Pool Professional Pole 6' - 17' P/N: 3006 The Patented EliptiLock telescope pole is the only telescope pole made with no parts. Nothing to fall out or break! Made of drawn aluminum tubing, the outside tube is rolled just slightly out of round. A short section of the inside tube is equally out of round. When turned against each other these tubes create their own lock. And this lock holds up for many years. Even when used on a daily basis.