Toplimit 4 Pack ESD Silver Tone High Voltage Anti-Static Keychain Car Static human body Static Eliminator Discharger Package Content :4 colors Static Discharger Can effectively eliminate objects static Dimension : 8 x 0.8 x 0.8cm When to eliminate static the product will shine, can only see the spark in the darkness Used for a variety of objects discharge Shaped like a bullet, very cool