The Titan Telescoping pole uses inter-locking sleeves to raise and lower the pole sections(no more troublesome push buttons). All of our external parts use high grade lexan polycarbonate parts that are chemically treated to prevent UV deteriation. Our tube sections are extruded from T6061 aircraft-grade aluminum. If you have further questions please contact us. We would love to help! Our mission is to provide you with excellent, American-made products.