Yes you do need to use your own tools to tighten the nuts amd bolts (except the anti lock hitch pin which comes with an appropriate sized wrench). Por supuesto, ya no lo podemos devolver y se convirtió en basura. com because it is spot on, they will do until the actual proper earpads come back in stock (only reason i bought these as it was urgently needed, the proper one had completely torn off)Not really an "upgrade", but a side-grade. I can wear them all day without a problem. They last years and can be used for any occasion The notification sound (when voice notifications are turned off) on the cyclone is also an annoying dial tone/busy signal-esque sound, rather than the beep given by the other devices from the brand. PS: I bought a second dongle, usb charger cable and wired cord but only the charger cable came in from the logitech website, worst customer service, if you plan on buying or are looking for replacement parts, i would personally look for them on amazon rather than their website. Not enough orthotic support for me plus the shoes are not very comfortable The glue is very loose. I decided to focus on a better storage method for my light jackets and cardigans.