15 pieces of 27mm guitar piezoelectric pickups, buzzer blades, instrument stands, drum pickups, patch wire length 33cm

About this item:1. [High Quality] Made of brass and ceramic, temperature resistant, stable, durable and long service life2. [Size] Piezo pickup plate diameter 27mm, thickness 0.4mm; wire length 330mm(13"), small, thin and lightweight3. [High Performance] Resonant frequency 4.6 +/- 0.5 KHz, resonant impedance 300 ohms max, low power consumption and high sensitivity4. [Easy To Use] These pre-wired piezo pickups are easy to install and use in cigar box guitars, foot stompers and other home-made instruments for sound and vibration detection5. [Wide Usage] Perfect for beginner to use as touch-sensors, electronic drum triggers, buzzers, make your own contact mics, also used for watches, cameras, phones, electronic toys, computer, etc

Description:Base Material:BrassSize: center disc measures approx 27mm diameter, 0.4mm thick, cord length 330mmType:External drive type elementResonant Frequency:4.6 ± 0.5 KHzResonant Impedance:300Ω max