GCT-570101 Iris Diaphragm $ 59.20 GCT-570101 Iris Diaphragm Category GCT Optical Cage Syatem Price: PriceQuantity - + Stock: 99 Buy now Add to cart Mailbox GCT-57 Iris Diaphragm ◆ 30mm Cage System Compatible ◆ Aperture Variation Ranging from Ø1mm to Ø12mm ◆ Easy Placement and ...