●They are packed in a transparent box for easy use and storage. ●Tin plating,corrosion resistance,discoloration resistance,non-toxic,easy brazing,low melting point. ●Tinned terminal lugs suitable for use in marine automotive or outdoor use,can be crimped or soldered. ●Heat shrink with a 3:1 high contraction ratio. ●Containing glue,waterproof,and double wall.Excellent hot melt adhesive and high shrinkage ratio provide excellent sealing.