30-40mm

Bresser Achromatic 3x 1.25" Barlow Lens - 49-50350 The magnification of your telescope can be tripled with the use of this achromatic Bresser Barlo...

Explore Scientific 82 Degree Series 30mm Waterproof Eyepiece - EPWP8230-01 Introducing the Explore Scientific 82° Series 30mm Waterproof Eyepiece. ...

Explore Scientific 82° Waterproof Eyepiece Kit - EPWP82KIT Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. Explore Scientific 82° Series ey...

National Geographic 8x42mm Water Resistant Binoculars - 80-00842CP  How many National Geographic 8x42 Binoculars have been sold? Let's just say mor...

National Geographic 16x32mm Water Resistant Binoculars - 80-01632-CP Keep an eye out with the National Geographic 16 x 32 Performance Roof Prism Bi...

Bresser Pirsch 8x34mm Waterproof Binoculars Elevate your viewing experience with the premium Bresser Pirsch 8x34mm Binoculars, an ideal companion f...

Explore Scientific 62 Degree Series 40mm Waterproof Eyepiece - EPWP6240LE-01 Discover the Explore Scientific 62° Series 40mm Waterproof Eyepiece, a...

Explore Scientific 52 Degree Series 40mm Waterproof Eyepiece - EPWP5240-01 Discover the Explore Scientific 52° Series 40mm Waterproof Eyepiece, the...

Bresser 70° 35mm Eyepiece - EP7035-0B Bresser 70° Series 35mm NON-WATERPROOF Eyepiece; 2" Barrel

Bresser 70° 30mm Eyepiece - EP7030-0B Bresser 70° Series 30mm NON-WATERPROOF Eyepiece; 2" Barrel

Vixen NPL 40° 40mm Eyepiece (1.25'') Plossl - ES39209 The new NPL Series Eyepieces: 2-group, 4-element Plossl design offers flat and clear images w...

Vixen NPL 50° 30mm Eyepiece  (1.25'') Plossl - ES39208 The 2-group 4-element Plossl optical design of the NPL series eyepieces delivers flat and ...

Vixen NLVW 65° 30mm Eyepiece (1.25") - ES39301 Vixen NLVW Eyepieces are fully multi-coated, in which multi-layer coating is applied on the entire l...

National Geographic Open Bridge 10x42mm Waterproof Binoculars - TRV-1042WP-NG These rugged binoculars are among the best we’ve offered. BAK-4 roof ...

National Geographic 10x42mm Waterproof Binoculars - 80-11042 The 10x42mm binoculars are very versatile Roof binoculars: waterproof, handy and a pro...

National Geographic 8x40mm Binocular - 80-11840 With their ample aperture and excellent optics, the National Geographic 8x40 binoculars are a ve...

German Precision Optics GPO Passion ED 10×32mm Binoculars - available in 4 different colors  Explore the world like never before with the German Pr...

German Precision Optics GPO Passion ED 8×32mm Binoculars - available in 4 different colors  Elevate your outdoor experiences with the German Precis...

Barska 8x32mm WP Level ED Binoculars - AB12990 Experience superior optical performance with the Barska 8x32mm WP Level ED Binoculars. These binoc...

Barska 8x42mm WP Level ED Binoculars - AB12802 The Barska 8x42mm WP Braced Level ED Binoculars are engineered to provide exceptional optical perfo...

Bresser Barlow Lens 2x 31.8mm/1.25" - 49-50110 With the usage of barlow lenses, you can extend the focal distance of telescopes and hence the magni...

Explore Scientific 100 Degree Series 3-inch 30mm Waterproof Eyepiece - EPWP10030-01 Presenting the Explore Scientific 100° Series 3" 30mm Waterproo...

Explore Scientific 68° Waterproof Eyepiece Kit - EPWP68KIT Using advanced computer design, combinations of low dispersion and high refractive index...

Explore Scientific 62° Waterproof Eyepiece Kit - EPWP62KIT Using advanced computer design, combinations of low dispersion and high refractive index...