Sigma Teleconverter 1.4X TC-1401 for Nikon F Mount DSLR Lens – Caps & Pouch
Compact, weather-sealed and lightweight (~190 g), it’s ideal for extending your reach without the bulk of another lens. Popular pairings include Sigma 60–600 mm Sports, 150–600 mm C/S, and 70–200 mm f/2.8 Sports lenses (check compatibility).