So that your wheat can see where it's growing. OK, they're really for all those teeny-light needs: dollhouses, models, robots, train sets, like that. This set was made to be a repair kit for Aura Grain of Wheat rope lights, and you can still use it for that, but you'll get an 18" length of 3/8" dia clear or colored rope with (18) white lights inside, plus (2) 1-3/4" pieces of clear shrink-wrap tube, and (2) 2-pin splice connectors. The 18" length operates at 120VAC & draws approx. 9 watts. Use it as is or slice the tube and remove the 6 volt GOW lights.