Fujinon Eye cups, Type 1 for all MT Poseiden series and the 16x70 FMT and FMTR
 
Set of two
 
Compatible with:
 
Fujinon 7x50 MTR-SX
Fujinon 7x50 MTRC-SX
Fujinon  7x50 MT-SX
Fujinon 16x70 FMT-SX
Fujinon 16x70 FMTR-SX
 
Original Fujinon/Fujifilm product
 
Directions to install:
Remove the old eye cup by twisting off counter-clockwise.
Install new eye cup by twisting clockwise until hand tight.