Seymour Helios Solar Glass Binocular Filters (Pair)

Suitability chart

• 2" (50mm). Fits Optical Tube Diameter 1 5/8" (41mm) to 1 7/8" (47mm).
• 2.25" (57mm). Fits Optical Tube Diameter 1 7/8" (48mm) to 2 1/8" (53mm).
• 2.5" (63mm). Fits Optical Tube Diameter 2 1/8" (54mm) to 2 3/8" (59mm).
• 2.75" (70mm). Fits Optical Tube Diameter 2 3/8" (60mm) to 2 5/8" (66mm).
• 3" (76mm). Fits Optical Tube Diameter 2 5/8" (68mm) to 2 7/8" (73mm).
• 3.25" (82mm). Fits Optical Tube Diameter 2 7/8" (74mm) to 3 1/8" (79mm).
• 3.5" (90mm). Fits Optical Tube Diameter 3 1/8" (80mm) to 3 3/8" (86mm).
• 3.75" (95mm). Fits Optical Tube Diameter 3 3/8" (87mm) to 3 5/8" (92mm).
• 4" (101mm). Fits Optical Tube Diameter 3 5/8" (93mm) to 3 7/8" (98mm).
• 4.25" (108mm). Fits Optical Tube Diameter 3 7/8" (99mm) to 4 1/8" (105mm).
• 4.5" (114mm). Fits Optical Tube Diameter 4 1/8" (106mm) to 4 3/8" (111mm).
• 4.75" (121mm) Fits Optical Tube Diameter 4 3/8" (112mm) to 4 5/8" (117mm).
• 5" (127mm). Fits Optical Tube Diameter 4 5/8" (118mm) to 4 7/8" (124mm).
• 5.25" (133mm). Fits Optical Tube Diameter 4 7/8" (125mm) to 5 1/8" (130mm).
• 5.5" (140mm) Fits Optical Tube Diameter 5 1/8" (131mm) to 5 3/8" (136mm).
• 5.75" (146mm) Fits Optical Tube Diameter 5 3/8" (137mm) to 5 5/8" (143mm).97mm to 403mm).

Pair of solar filters, in selected size : 

• 2" (Fits 41mm to 47mm).
• 2.25" (Fits 48mm to 53mm).
• 2.5" (Fits 54mm to 59mm).
• 2.75" (60mm to 66mm).
• 3" (68mm to 73mm).
• 3.25" (74mm to 79mm).
• 3.5" (80mm to 86mm).
• 3.75" (87mm to 92mm).
• 4" (93mm to 98mm).
• 4.25" (99mm to 105mm).
• 4.5" (106mm to 111mm).
• 4.75" (112mm to 117mm).
• 5" (118mm to 124mm).
• 5.25" (125mm to 130mm).
• 5.5" (131mm to 136mm).
• 5.75" (137mm to 143mm).