KANI 816214 Fitting Ring, 2.3-2.3 inches (58-58 mm), Spacer Ring, 0.3 inch (9 mm), Filter Accessory, Compatible with FA31mmF1.8AL, Black Frame, Aluminum

58-58mm Spacer ring 9mm Filter fitting for lenses with 58mm filter frame diameter and extends filter mounting position Improved handling of filters with deep attachment points, such as lenses with built-in hoods. Extended mounting position allows smooth operation when removing and removing filters. Similarly, the hood can be attached to the filter frame sold separately. When installed on PENTAX (RICOH) lens FA31mm F1.8AL Limited, this spacer ring is installed with the KANI protector "Protector 58mm " or "Premium Protector 58mm " which will protrude from the built-in hood, allowing you to attach the spacer ring to a hood that is attached to the filter frame. APS-C can be used without vignetting and vignetting on full sizes will appear slightly in all four corners.

• Extension ring that can be attached to a lens with a 2.3 inch (58 mm) diameter frame to extend the position of the filter
• You can mount a square filter to the PENTAX FA31mm F1.8AL, etc
• Product Name: 2.3 - 2.3 inches (58 - 58 mm) Spacer Ring 0.3 inches (9 mm) (Model Number: K19181)
• External dimensions: φ2.4 inches (60 mm), frame thickness 0.4 inches (9 mm) (effective frame thickness excluding screw parts) / Unit weight: approx. 0.3 oz (9 g)
• Lens side frame diameter: 2.3 inches (58 mm) / Filter side frame diameter: 2.3 inches (58 mm)