Evans EC0975 Tri-Center Conga Drum Head - 9.75 InchEvans Tri Center Conga series simulates the sound and feel of animal skin while eliminating the problems associated with natural skin heads. The Tri Center minimizes overtones and adds weight to the center to enhance the fundamental tone. These heads provide superior tone, reliable durability, and unsurpassed resistance to climatic and temperature changes. A tapered hoop and "v" shaped radial slits are combined with Evans' Tri Center dot. The head