Activator Size is 4 inch x 2.5 inch x 1.75 inch and is the only BIGGEST Size available
The purpose of the Activator is to provide a maximal sustain when activating your tuning forks with the least minimal noise from the strike.
Perfectly made and designed to ensure an ideal balance of the firmness ( Hard and Soft ). If the material is too hard or too soft, the sound can not only be unpleasant, it would also result in undue wear and tear of your forks.
An Activator is to used as a surface to firmly strike the end of the tuning fork to Activate vibration. An injury can occur if the Activator is used to Activate the tuning fork on the body and is not recommended.
Works best with both Weighted and Non Weighted tuning forks