They are rubber deals that help with vibration and noise (which is made from vibration) Anyhow they are a name brand for several different type of vibration controls. The once I think of first when I hear " limb savers" are the ones that attach to your limbs. And yes they will work on any bow it only depend on wheather you have split limbs or solid limbs. Split limbs are a little more expensive and are two peices that fasten onto your limbs with a screw going between the two pieces of your limbs. For solid limbs they just stick on. If you use the stick on type make sure that you clean your limbs very well with sort of cleaner and let it dry or they will fall off.

I use them and like them.