Tarot T810 Battery Holder Specifications:Dia 12 silicone damping ring x 2 (23 x 9.5 x 10) 3.0GDia 12 metal shock absorber bracket x 2 (25.5 x 23.5 x 8MM) 3.0GM2.5 x 6.5 x 4 hexagonal screws ladder3K twill pure carbon plate x 1 (180 x 64 x 1.6MM)