Eye cup (645-913)

The spare part eye cup (645-913) is compatible with: PF x42, PF x50, PF x56, PV, PV-S. Manual for exchanging the eye cup: Removal - You only need to twist out & unscrew the old eye cup (counter-clockwise) by grasping the metal ring. Installation - when threading in replacement eye cup(s), turn them (clockwise) until they are fully tightened and flush with the binocular. Once they are flush, give them a final snug twist to fully seat and retain the eye cup.