Item Type: Battery CaseMaterial: NylonApplication: Can Be Used As an External Battery Box or Decoration for the Transmitter .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1High power version appearance, can be used as a transmitter plugin battery case or decorative use. 2Compatible with 7.4V11.1V batteries, can be put into the size : 60x40x13mm/2.4x1.6x0.5in batteries. 3Compatible with all 20mm/0.8in rail systems. with great workmanship, perfect replacement for the old one. 4Made of high quality nylon material, with strong toughness, sturdy, durable and long service life. 5Simple design, light and compact, easy to carry and use, convenient and practical.