Northlight 31.2-ft 50-Light Clear Glass-Shade Plug-In Bulbs Incandescent String LightsSet of 50 blue and clear Christmas mini window curtain icicle lights Alternating blue and white lights Spacing between each bulb 3 inches; Spacing between each drop is 6. 25 inches UL listed for indoor and outdoor use Lighted length is 31. 2 inches Features Space Between Lights (Inches) 3 Shade Material N A (no shade) Bulb Type Incandescent Power Source Plug in Cord Length (Feet) 31. 2 Lighted Length (Feet) 31. 2 Plug at Both Ends No Maximum Linkable