snap frame,flexiable and easy to install, convenient to carry Size: A1, A2, A3, A4, B1. B0, B2 G. W.: 2kg, 1.5kg, 1.2kg. Product Name: Snap FrameMaterial: Aluminum, PVCColor: Silver,Size: A1, A2, A3, A4, B1. B0, B2G. W.: 2kg, 1.5kg, 1.2kg. 0.9kg, 3kg, 4kg, 1.8kg,Packing: 5pcs