The Grover SX Tambourines are general-purpose concert instruments specifically designed for those looking for a value-priced, quality concert tambourine. Fabricated from wood fiber, the Acousticon shell is formed under heat and pressure creating a strong, durable frame. Pre-tensioned heads made from durable FiberskynT material are chosen for their strength and tension stability. Includes Cordura bag and roll ring. These replace the SVTAMBBR SV series.