Comming from similarly priced chinese shock mount, this thing does amazing! Not only does it help with bump pickups when touching the stand, but it also seemed to isolate the bumps comming from the desk that my arm is mounted on.
The screw is wide enough and clamps easily, and the mechanism seems not to require lots of tension to keep in one place.
The outer ring is made out of metal that does not resonate with bumps and the outer rubber bands are thick and are covered in isolation (think: heavy duty hair bands).
The inner ring is hard(ish) plastic and the bands that actually hold the microphone are naked thinner soft "wet-ish" rubber.
The connector is made from thick plastic and the screw hole is made via copper insert.
Everything seems to be made to last, but the only concearn I have are the soft naked inner rubber bands, which might "dry out" after a while... but I guess that's why you get two spares in the box and I'm sure you can buy equivalent bands in any of your local hardware stores.
If you need a shock mount: GET. THIS. NOW.