Both the toneTABs and the duraDOTs are DRUM TONE MODIFIERS. They are made of a 10mil plastic material with a reusable adhesive backing. Frequencies are adjusted when adding tone modifiers. Their practical design allows for placement anywhere on the head. Both the TAB and the DOT can be played on without interfering with the movement of the drumstick. Adjusting the ring or decay of the drum can easily be achieved in real time - even changed in the same song! Aquarian toneTABs and duraDOTs don't leave a sticky residue and can be used over and over again.