Sensei 49-72mm Step-Up Ring Canare CAXMXF6RD unlike many normal Barlow lenses

unlike many normal Barlow lenses Accepts optional PTR-4201 SLR camera adapter ( imaging w/o eyepiece )

Packed in Thin Jewel Cases

It’s the Arduino Pro

TTX01 Plastic Resin Case

Sensei 49-72mm Step-Up Ring Canare CAXMXF6RD unlike many normal Barlow lensesUse 72mm Filters on 49mm Lens Corrosion Resistant Anodized Aluminum The Sensei 49 72mm Step Up Ring permits the use of 72mm threaded filters on lenses with 49mm filter threads. It features a lightweight, aluminum alloy construction that has a corrosion resistant, black anodized finish for durability. UPC: 847628538139 Size 49 72 mm Thickness 3 mm Material Aluminum alloy Knurling None Packaging Info Package Weight 0. 1 lb Box Dimensions (LxWxH) 2. 8 x