Check the listing for details. Colorful Flashing LED Cross Soldering Practice Kit. Condition: New. Listed at 11.99 USD. Science Purchase Our eBay Store About Us--> Contact Us--> Add to Favorite Sellers--> Colorful Flashing LED Cross Soldering Practice Kit 16.88 --> This is a simple circuit with big funThe LED from L1 to L2 will flash in a colorful and random mannerGreat soldering practice kit for beginnersAssembly with a soldering iron is required (solder and soldering iron are not included)Requires a 9 volt battery (not included) This is a simple circuit with big fun. The LED from L1 to L2 will flash in a colorful and random manner. Great soldering practice kit for beginners. Assembly with a soldering iron is required (solder and soldering iron are not included). Requires a 9 volt battery (not included). Product Details PCB Color Green Height 4.500" Length 3.000" Width 0.500" UPC --> Thank you for viewing our listing. If you have any questions about this item, please click the "Contact seller" link above.