5mm lights have a very sharp light to them and are very focused and bright. The small size means fewer snags. They're great for branch-wrapping in Christmas trees, outdoor bushes, and outdoor trees.
 
Full Wave Multi Color 5mm
LED Holiday Lights
35 Bulbs/String
green wire
UL Listed: YES
Dimmable: YES
Sealed Sockets: YES
Lights per String: 35
Light Spacing: 4 inches
Lead and Tail: 4 inches
Overall Length: 12.5 feet
Connect 80 Strings End-To-End
Wire Color: green