ReviewsLanthanum Hexaboride

Pentax 70513 SMC-XW 7 1.25-Inch Eyepiece for Telescopes and Pentax Spotting Scopes

Improved 70 Degree field of view for easier viewing.
Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm will give a wider field of view than typical eyepieces when used on Pentax spotting scopes or with most any telescope.
Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm, 30mm, and 40mm are designed specifically to provide exceptional views when used with most any telescope.
Fully multi-coated lenses increase light transmission and color quality.
High-refraction, low-dispersion lanthanum glass elements deliver bright, high-resolution images with Minimal aberrations and distortion.

Improved 70 Degree field of view for easier viewing.
Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm will give a wider field of view than our previous eyepieces when used on Pentax spotting scopes or with telescopes.
Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm, 30mm, and 40mm are designed specifically provide ideal viewing conditions When used with a telescope.
Fully multi-coated lenses increase light transmission and color quality.
High-refraction, low-dispersion lanthanum glass elements deliver bright, high-resolution images with Minimal aberrations and distortion.

10-pk premium TIG welding Tungsten electrodes tri-element non-radioactive. Electrode diameters: 0.040" (0.5mm), 1/16" (1.6mm), 3/32" (2.4mm), 1/8" (3.2mm) and 5/32" (4.0mm).
AWS Classification: EWG (Purple). Conform to ANSI/AWS Standard A5.12M/A5.12:2009 ISO 6848:2004 MOD. Ground annealed..
Mixed tri-oxides of Lanthanum, Zirconium and Yttrium with total rare earth composition around 1.5% - 1.8%.
Tungsten remains. Non-radioactive Tungsten electrodes.
excellent substitute for Thoriated Tungsten electrodes. Wide current range and low burn-off rate. Easy arc starts and good stability..
Package available: 10-pcs/box for each size of 0.040.

combinations of low dispersion and high refractive index optical glasses.
The 72 Series Argon-Purged waterproof extreme wide field eyepieces are optimized to produce high contrast.
The 72 Series eyepieces come with a removable and foldable soft silicone rubber eyecup for the comfort of the observer.
Fully multi-coated glasses for excellent image contrast and light transmission.
Sharp optimal performance with low chromatic aberration.

Premium TIG welding Tungsten electrodes. Conform to ANSI/AWS Standard A5.12M/A5.12:2009 ISO 6848:2004 MOD..
Available Tungsten alloying: 2.0% Thoriated (EW-Th2/Red), 1.5-1.8% mixed tri-oxides of Lanthanum, Zirconium and Yttrium (EWG/Purple, non-radioactive), 2.0% Lanthanated (EW-La2/Blue), 2.0% Ceriated (EW-Ce2/Gray), 1.5% Lanthanated (EW-La15/Gold) and Pure (EW-P/Green)..
Tungsten electrode diameters: 0.040" (0.5mm), 1/16" (1.6mm), 3/32" (2.4mm) and 1/8" (3.2mm).
Packages available: 10-pcs electrodes of 0.040", 1/16", 3/32" and 1/8" with different alloying assortedly packed in one box. With quantity discount. Buy More Save More!.
U.S. based welding and hardware supplier. Strong technical support with experienced customer service to address buyer's any question..

MULTI-FUNCTION DESIGN: Terdemor fire starter survival tool includes a 5" Ferro Rods, a 4" scraper, a paracord, a emergency whistle and two 12" Nature Dry Tinders..
GREAT FERRO RODS: Terdemor Firestarter is made of Magnesium, Lanthanum, Cerium and other rare metals. More than 20,000+ striker and over 5,500°F to create shower of sparks. 5" long body make sure it easy to use and easy to hold..
THE BEST SCRAPER/STRIKER: Different from others, the scraper of the flint and steel is made of special high speed stainless steel (3CR13). Also, it's much longer (4") and thicker (0.1") than other scrapers..
LONGER BURNING TIME: 20 minutes burning time for each 12" Nature Dry Tinder and 40 minutes for two tinders total..
TERDEMOR GUARANTEE: We value your feeling, any uncomfortable purchasing experience, please contact us and we will make it right within 24 hours!.

【Premium Quality Tungsten Electrodes】The tig welding tungsten electrodes rod is perfect for tig welding. Durable. Good conductivity. Arc starts easier and more stable. Hardness ensured..
【High temperature-resistant, Non-melting】98% Tungsten, 1.0% Lanthanum, 0.5% Zirconium, and 0.5% Yttrium, non-radioactive. Annealed brittled for easier sizing. Melting point can reach 3,410 degrees Celsius. Conform to ANSI/AWS A5.12M/A5.12:2009 ISO 6848:2004 MOD..
【A Wide Range of Suitable Base Metal Type】Good for stainless steel, copper alloys, carbon steel, nickel titanium, copper alloys, magnesium, aluminum and its alloys, etc..
【Upgraded Vacuum Package】10 pcs 0.04''(1.0mm)×7''(175mm) ground finish tungsten electrodes. Anti-oxidation vacuum packaging. Ensure product quality and longer preservation time..
【Worry-free Purchase】Selling directly from MARSWARE factory. Returnable within 30 days of receipt of shipment. Experienced and professional customer service team to help you solve any issue..

WHOLE BODY WELLNESS SUPPORT: Our unique mineral supplement works to boost your body's natural immune support system. Filling in the nutritional gaps of your daily life for muscle function, endocrine, and brain activity. Used for overall head-to-toe health..
NATURAL NUTRITION: Our vegan formula is rich in carbon, oxygen, and fulvic acid and is easy to absorb without any harsh chemicals. The easy 1-ounce daily serving is safe to use every day as a perfect enhancer for your daily supplement routine..
INTRACELL TECHNOLOGY: Our groundbreaking intraCELL Technology is designed to ensure maximum absorption while preserving all the best nutrition. This helps our trace minerals and electrolytes reach our body's systems with the most effici....