It’s a Hozan, C-205 lockring wrench that tightens and loosens the couplings. Well made, steady in the hand, and when used means we’ve either started or ended a trip.
My daily shooter is Sony a9 II with a vertical grip and various Sigma lenses attached like the 14mm 1.4 Art. Find more recommendations on our store page. As an Amazon Associate I earn from qualifying purchases.