Made by Dale Mathis in Las Vegas, these little light-weight foam battery compartment adaptors are the perfect fix for anyone using the Eaching E010 (black) frame looking to use the standard Tiny Whoop style batteries. They weigh in at under 0.3g! No more batteries sliding around and throwing off balance and stabilization. Each one will also come with a free upgraded battery pigtail to make your conversion complete! Replace the current battery jack with this pigtail or add it to the current setup to allow for the use of both battery connectors.