US$ 20.00
The longer lead is positive (anode) and the shorter lead is negative (cathode)
but concrete and metal structures introduce significant attenuation
This product solves the critical problem of battery safety management
379 pieces with a 63-centimeter assembled length
N20-12V-200 RPM Micro Metal Gear Motor V6 Volcano Brass Length Extruder Nozzle 1.75mm x 0.6mm The longer lead is positiveN20 12V 200 RPM Micro Metal Gear Motor