Item Type: Violin Pickup BridgeMaterial: Maple Wood, MetalSize: Approx. 3.3 x 5.1 x 1cm / 1.3 x 2 x 0.4in 1Compatibility and Piezo: The violin piezo pickup bridge is compatible with 4/4 full size violins. Highly sensitive piezo for excellent performance. 2Internal Mounting: The pickup in the violin piezo pickup bridge is internally mounted or recessed for greater stability and convenience. 3Connecting Devices: The 2.5mm (0.1in) diameter plug in the violin piezo pickup bridge can be connected to preamps, equalizers, etc. 4Light Weight: The violin pickup bridge is light in overall weight, very easy to carry and install, and very friendly for novice performers and practitioners. 5Maple and Metal: The violin pickup bridge is made of maple and metal materials, which can be done for longer term use.