The four piece set is a good deal at a buck and a half. A little bit larger than expected. The set I received is made from a soft silicone and somewhat stretchable. I traced the top part of my camera gimbal and cut 2 piece's the same and made my damper. Each piece is usable for 100 grams. 4 piece's will hold up to 400 grams actually around a pound. I mounted my damper to the bottom of the hex and the top of the landing gear my camera and 3300 3s battery is mounted to the landing gear. No jello... Great deal and a little better to have it in three days. (Posted on 10/11/2014)
*** As staed, be aware that these are hard rubber and not the soft silicone dampers. In my situation, they did not improve the "Jello". I previously balanced all 4 props on the quad and kept the cam/mount out of the prop wash. (Posted on 9/22/2014)