They are...hmm...OK. found they vibrate on my tritons mirror's. Even at their widest extension l'm unable to see behind me. I've travelled 100kms so far and broken 2 mirror's. They just don't lock down well on the triton mirror. I'm constantly watching them. So far it's cost me nearly $300. Ps. Be very careful when assembling the mirror, they are lite and crack easy if dropped. I only leave them on now to make my setup look legal on the road.
Good product
Monster 32" Bluetooth Tv/Dvd player
Milenco Aero Grand Replacement Head Convex MIL2493