Description: Mount Adapter: The finderscope mount bracket is used for the installation of the finder scope on the optical telescope. Wide Compatibility: The finder scope mount base is universal for any diameter telescope tube, suitable for C8 C8HD C925 C11HD 80ED 102ED 130APO 100ED, etc. Durable Material: The mount adapter is made of high quality aluminum alloy material, CNC processed, wear resistant, sturdy and durable to use. Stable Connection: Professional manufacturing astronomical telescope accessories, the telescope finderscope mount bracket is tightly clamped with screws, providing a stable connection, has a long service life. Portable Size: The mount groove plate is compact and lightweight, easy to store and carry. Specification: Product size: length x width 4.2cmx3.9cm/1.65inchx1.54inch Upper edge: 2.37cm/0.93inch Center: 3.4cm/1.34inch Groove edge: 0.95cm/0.37inch Lower edge: 3.4cm/1.34inch Cross hole: width 5mm/0.20inch., can fix M3-M5 screws. Material: aluminum alloy Package Includes: 1 Finderscope Mount Bracket 2 Screws 2 M5 Screws 1 Wrench Note: Please allow slightly errors due to manual measurement and different monitors.