Description:Standard Fiber Optic Adapter (Fiber Optic Flange/Cover Sleeves) is a passive fiber optic device designed for connection between two connectors. There are many adapters with high accuracy, low insertion loss, superior durability, excellent interconnection and temperature adaptability. FC adapters also have good optical and mechanical performance, and widely used in optical distribution frames (ODFs), communication and measurement equipment. Specification: Material: FBT Hole Control: Blue Precision Machining Size, High Reliability, Stability Low Insertion Loss, High Return Loss, Good Interchangeability Insertion Loss: le; 0.2 dbReturn loss: ge; 50dbOperating Temperature: -30 - +75Storage Temperature: -40 - +85Interchangeability: le; 0.2dBThe vibration stage: le; 0.1dB (10-60Hz, amplitude 1.5mm)Repeatability: ge; 1000 Times Connection: FC, ST threaded fastener type; LC, SC for Snap ButtonQuantity: 10pcsNote:1. Please allow 1-3cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:10pcs x Fiber Optic Adapter