Kowa 105mm Multi-Coated Filter Black. This filter provides an additional layer of protection to the 99mm lens without sacrificing the light gathering ability of the scope. The filter is also KR coated to allow water to roll off and enable easy cleaning. Specifications for Kowa TP-105FT 105mm Multi-Coated Filter: Manufacturer: Kowa Color: Black Objective Lens Diameter: 105 mm Package Type: Box Fit: TSN-99A Package Contents: Kowa TP-105FT 105mm Multi-Coated Filter Kowa TP-105FT: TP-105FT 105mm Multi-Coated Filter Black