2 set Musical instrument accessories:1 Set Violin EQ Pickup (Not including battery) & 3 x Toggle Switch Tips FITS FOR: These guitar switch Tips are used for guitar 3 way toggle switch. Nice replacement for LP style electric guitar. 4mm inner thread sizes MATERIAL: The guitar switch is made of copper, which is anti-rust and to use. EASY TO INSTALL: Easy to install with the high precision thread. Active tone control system, no noise, perfect for a electric violin. High quality silent EQ pick-up produces nice and charming sound. DIY your electric violin through the electric violin pickup outfit. With tone control & volume control, easy to adjust. With 6.35mm output and 3.5mm headphone jack, convenient to connect. Condition: Each Length: . 13mm / 0.51in The switch is not included. Note: Please carefully check the size before bid it. Color: Black+Silver & - Material: Plastic + metal Tone Control: ±12dB Volume Control: 0-10 Frequency Response: 20Hz~20KHz Power Supply: 1 x 9V battery(not included) Package Size: 13 x 13 x 4cm/5 x 5 x 1.6in Note: This item is not including the battery. Package Contents: 1 Set Violin EQ Pickup (Not including battery) 3 x Toggle Switch Tips Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.