NiSi Brass Pro 40.5-49mm Step Up Ring 32" while the ribbed collar adds

while the ribbed collar adds stretch

and captive mounting bolts prevent lost hardware during reconfiguration

Compatible with most modern smartphones up to approximately 260g

Removable Waist Straps: Removable waist straps distribute weight evenly when worn as a backpack

Precision Brass Frame: Constructed from brass using highly accurate milling for a durable

NiSi Brass Pro 40.5-49mm Step Up Ring 32" while the ribbed collar addsThe NiSi Brass Pro 40. 5 49mm Step Up Ring allows the use of 49mm threaded filters on lenses with 40. 5mm standard filter threads. Featuring a durable brass frame with Knurled sides for easier grip. The Brass Step up ring prevents binding and jamming making it easier to remove compared to standard aluminium setup rings. The NiSi Brass Pro Step Up Ring has a special anti reflective felt treatment on the inside of the frame to minimise reflections and