530pcs/set Heat Shrink Tubing Insulation Shrinkable Tube Assortment Electronic Polyolefin Ratio 2:1 Wrap Wire Cable Sleeve Kit Arduino & SCM Supplies to prevent the battery polarity

to prevent the battery polarity reversed connection

The featured barometer altitude hold and optical flow positioning help the drone achieve great performance in precise location and position hold

Long lasting and perfect fit

smaller safety device

530pcs/set Heat Shrink Tubing Insulation Shrinkable Tube Assortment Electronic Polyolefin Ratio 2:1 Wrap Wire Cable Sleeve Kit Arduino & SCM Supplies to prevent the battery polarity530pcs Heat Shrink Tubing Insulation Shrinkable Tube Assortment Electronic Polyolefin Ratio 2: 1 Wrap Wire Cable Sleeve Tubes Kit Descriptions : Brand new and high quality Big collection of heat shrink tubing,8 Specifications,5 colors. Supplied internal diameter: 1. 5mm,2mm,3mm,4mm,5mm,6mm,8mm,10mm Fully shrunk internal diameter: 0. 75mm,1mm,1. 5mm,2mm,2. 5mm,3mm,4mm,5mm Color: Black,Yellow,Green,Red,Blue Specifications: 8 Quantity: 1 Pack(530pcs)