Product picture - Nimar Extension Ring with Mechanical Zoom Control & Lock for Sigma 10-20mm F 4-5.6 EX DC HSM

Product picture - Nimar Extension Ring with Mechanical Zoom Control & Lock for Sigma 10-20mm F 4-5.6 EX DC HSM
Nimar, Extension, Ring, with, Mechanical, Zoom, Control, &, Lock, Sigma, 10-20mm, F, 4-5.6, EX, DC, HSM

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Nimar Extension Ring with Mechanical Zoom Control & Lock for Sigma 10-20mm F 4-5.6 EX DC HSM, Nimar, Extension, Ring, with, Mechanical, Zoom, Control, &, Lock, Sigma, 10-20mm, F, 4-5.6, EX, DC, HSM