Promaster 5131 72-77mm Step Up Ring Rollers A double linear motor system

A double linear motor system directly drives the lens's focus mechanism without intervening gears for precise

making it possible to shoot impressive close-ups with smooth

This enables superior image-formation performance from maximum aperture

(2900g) Lens Case CL-L1 Lens Hood HK-36 Supplied Accessories 52mm filter holder

Promaster 5131 72-77mm Step Up Ring Rollers A double linear motor systemFeatures: PROMASTER Stepping Rings are the perfect addition to your collection of photographic gear. Use them with special effects filters and add on lenses to convert a lens with one thread diameter to a filter or conversion lens with another. PROMASTER Stepping Rings are precision milled and designed to give you years of reliable service.