Feature: 1. You can use this complete pickup kit to make your own electric violin sound 2. Since the pickup in the kit is no noise, you can perfectly release the sound of your violin 3. Very suitable for violin players to improve the sound of the violin, easy to install and use 4. Can meet the different needs of daily life, and very convenient for music lovers and violin lovers 5. Violin parts can provide good maintenance for the instrument and reduce wear and tear, and extend the life of the violin Specification: Item Type: Violin Pickup Set Material: Copper + Plastic Pickup Rod Size: Approx. 43 x 5.6mm / 1.6 x 0.2in (manual measurement has 2-3mm error) Audio Plug: Approx. 2.5 mm / 0.09in End Pin Socket: Approx. 6.35mm / 1/4in. Package List: 2 x Knob1 x Pickup Rod1 x Pickup with Transducer1 x Socket1 x Fixed Wire Reel4 x Screw7 x Screw Loop Note: Please note that the transducer must be placed on a flat exterior, so it cannot be used for traditional violins‑for solid bodies or other designs with flat points under the bridge.