SmallRig 4581 Specs

Density	0.3 (1 Stop) 1.5 (5 Stops)
Mount Size	67 mm (Lens)
Coating	Multi-Layered
Material of Construction	Aluminum, Glass
Dimensions	3.7 x 3.7 x 0.8" / 93 x 93 x 21 mm
Weight	1.4 oz / 41 g