I used 3/4 steel tubing from Lowes and spent $30 on hardened steel bolts to replace the inferior ones that came with it. So, who should buy these ? First of all, if you don?t have an amp, stick to the 30 and 250 ohm versions. I ordered the medium for the females and the large for the males and it was perfect. Hanno un buon grip e sono veloci da indossare e togliere e sono leggerissimeHo comprato un paio del mio numero esatto, ma in estate col caldo a me si gonfiano i piedi e quindi stringono in maniera fastidiosa. This gives you more security if necessary. I do advertising and I put on a costume and dance outside for the Halloween store , liberty tax, and so on. scared the crap out of me and my (older) family. You really cant go wrong here if what you want is something you can take anywhere and is loud. I received some wood oriental looking umbrella thing instead Some kind of pressure adjustment mechanism would be handy.