The K&F Concept 11-in-1 filter adapter ring set includes 11 adapters made of aircraft-grade aluminum alloy, for adapting accessories to different types of lenses. The thin, polished rings provide precise fit, a secure seal, and stability without play or vibrations. Multiple rings can be combined.

• Thread diameters: 26-30 mm, 30-37 mm, 37-43 mm, 43-52 mm, 52-55 mm, 55-58 mm, 58-62 mm, 62-67 mm, 67-72 mm, 72-77 mm, 77-82 mm
• Material: aircraft-grade aluminum alloy
• Fit type: thread diameter increase
• Number of rings: 11
• Features: thin polished rings, ability to combine multiple rings, secure seal, no play, lightweight and durable