100 Ultra-Brite Red Mini Bulbs String Light Set with Green Wire - Steady Burn & Flashing Modes UL Certified - For Indoor & Outdoor Use End to End Connectors - 5 Sets Of Light Strings Can Be Connected Together If 1 bulb burns out, the rest remain lit. - Includes 2 Flasher Bulbs, 2 Replacement Regular Bulbs, & 1 Replacement Fuse Approximate Lighted Length: 22.6 Feet - Total Length: 24 Feet - 2.75" Spacing between Bulbs - 12" Lead & 3.5" Tail These Red Christmas Tree Lights with Green Cord plug in easily and are perfect for using as Christmas Tree Lights , Patio Lights , Outdoor Bush Lights , Christmas Wreath Lights , or any area where you want to add ambience and a magical glow ! " Holiday Pride: The Brand Preferred by Professional Decorators " Holiday Pride Ultra-Brite 100 Count Red Bulb Light String Set with Green Cord . UL Listed - Conforms to UL Standards. Safe for Indoor & Outdoor Use - 120 Volt. This Light Set consists of 2 independent circuits of 50 lights. Each circuit can be made to steady burn or flashing mode by replacing a regular bulb with a Red Tip Flashing Bulb (2 Red Tip Flashing Bulbs are included with this set). Total Length of Light String: 20 Feet. Lighted Length: 18.56 Feet. Spacing at the ends: 3.5" end on female adapter - 12" end on male adapter. If one bulb burns out the rest will remain lit. Fuse-protected, end-to-end connector allows up to 5 sets to be connected together in a continuous strand. These incandescent red string lights plug in easily for use on windows, trees, wreaths, garlands, outdoor bushes and many more applications!