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🔥 See the weld, not the glare — weld smarter, not harder! 🔥
The Lincoln Electric 2X4 C-Series Auto-Darkening Welding Lens Shade 10 KP3778-1 features advanced 4C lens technology for unparalleled clarity and reduced eye strain. Designed for low to medium amperage welding, it offers a fixed Shade 10 dark state and Shade 3 light state for setup. Compatible with most 2" x 4.25" helmet cartridges, it boasts a durable, heat-resistant ABS housing and comes with a 2-year warranty, making it a reliable choice for professional welders seeking precision and comfort.







| ASIN | B07WYCV7YB |
| Best Sellers Rank | #41,665 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #52 in Safety Eye Protection Accessories |
| Brand | Lincoln Electric |
| Brand Name | Lincoln Electric |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 1,407 Reviews |
| Environment Type | Industrial |
| Eyewear Type | welding glasses |
| Global Trade Identification Number | 00150828590716 |
| Included Components | Screen |
| Industry | Construction, Manufacturing, Metalworking |
| Item Package Quantity | 1 |
| Item Type Name | Lincoln Electric 2X4 C-Series Auto-Darkening Welding Lens Shade 10 KP3778-1 |
| Item Weight | 0.01 Ounces |
| Manufacturer | Lincoln Electric |
| Material | Other |
| Model Name | Lincoln Viking |
| Number of Items | 1 |
| Part Number | KP3778-1 |
| Size | 2 in. X 4.25 in. |
| Special Feature | 4C Lens Technology, Versatile Shade States |
| Special Features | 4C Lens Technology, Versatile Shade States |
| Sport | Welding |
| Sport Type | Welding |
| Style | 4c Auto-dark - Shade 10 |
| Style Number | KP3778-1 |
| UPC | 150828590716 015082859071 |
| Warranty Description | 2 year manufacturer |
Y**A
The quality will be remembered long after the cost has been forgotten
Works like new after six years of service. It doesn’t make you a better welder, but it sure doesn’t hurt.
H**Y
Clear as crystal
Haven’t had any battery issues after a few months of use. Still clear as the day I first used it. Fit perfectly in my “finer pipelines cloud chopped hood” (no flip up). It is a little pricey, but it has a great warranty and holds true to the Lincoln name. It gets thrown around in my truck and hasn’t chipped or cracked. Also, everyone asks how it adjusts to tig. I have the shade 10 and haven’t had any flash.
P**H
Best lens i have ever used, auto or fixed
By far the most clear lens i have ever used. Fits pipeliner hoods with no modifications to the hood. On a fibre metal tiger hood (flip up), you have to open up the slot a little with a flat file, dremel, or burr bit, but you can still put a cover lens on each side after you do. This lens is clearer, has better color, and has more adjustability than any of the speedglas products i have used over the years. Also blows away wens lens ultra cool blue for about $20 less. Also, a word about color, this one has no green, orange, blue, red tint to it...it is real life color as your eyes see and that really seems to enhance the clarity for me.
T**A
Good lens, very clear, but the shade level isn't exactly accurate sometimes.
It works pretty good, hasn't flashed me too many times, and the lens is very clear. I work with high amperage MIG (1/16'' metal core spray transfer, ~340a) and I have to use shade 13, it's more like a 11.5 on my Miller T94i PAPR. If I use it at shade 12 (what I usually use on every other hood) I get a spot in my vision. The shade level around the edges of the lens also tapers off. There's a oval plunked in the box of the lens where it's shaded to the level you have it at, but in the corners and along the sides it'll be a shade 9 or 10. Kind of annoying, especially if you're having to use the edges of your lens to see what you're doing.
A**R
Perfect upgrade for a flip up hood.
Great auto lens for a flip up hood. Like the blue gray color of the weld puddle. Does chewy through battery’s.
C**N
muy buena calidad..
la primera vez que uso la marca claridad es bastante buena.. vengo de la esab A40.. la calidad tambien.. solo falta ver la durabilidad
A**.
2 year review
Update: I purchased this lens March or 2024. I have had this lens replaced under warranty for the first time September of 2025. The second one was replaced under warranty March of 2026. It is the end of April 2026 and now this one is broken too. Since I am outside the 2 year warranty window I can't get a free replacement. THIS IS THE MOST UNRELIABLE LENS YOU CAN BUY. IF YOU EXPECT TO MAKE MONEY WELDING DO NOT BUY THIS. Not reliable. Clarity is great but I replaced mine twice within the 2 year warranty period. Only reason why I gave 2 stars was because customer service was great. Will not buy again.
R**Y
Amazing product
Awesome lens from an amazing company. This allowed me to see what I was doing so much more clearly that it significantly and rapidly improved my ability to learn how to weld in school. I put the hood facing out toward the rear of my car, resting on the back seat headrest so that it’s always getting some sun and I’ve had no battery issues using it for about 10 hours a day, 4-5 days a week. Battery replacements are super cheap if you ever do need to replace it and best of all Lincoln stands by their word for the warranty of 2 years! My 2nd Viking lens had a small defect in the top left of the lens, I emailed Lincoln customer service and 3 days later I get a new one in the mail. Hot damn that’s some stellar service and I will keep buying these for every hood I own. Update: 4 months of solid, near daily use later and still no issues with my Lincoln 4c with original batteries. Does Tig, Mig, and Stick all flawlessly. Side note: you can easily file or cut down any flip up lens adapter to accommodate this lens just make sure you sandwich it in between two clear poly plates back and front to protect it while grinding.
D**R
Great
Some of these are hit and miss. I am on my 3rd one. The first 2 started flashing me after a few months. But the 3rd one has been working perfectly for the past 2 years.
A**S
Lincoln Electric 2x4 – Calidad y Precisión en Cada Soldadura
La Lincoln Electric 2x4 es sin duda una de las mejores opciones en el mercado para quienes buscan un filtro de oscurecimiento automático confiable y preciso. Su rendimiento es impecable, ofreciendo una transición suave y rápida que protege la visión sin sacrificar la claridad del arco. Lo que más destaca es su comodidad y durabilidad. Diseñada para adaptarse a diversos cascos de soldadura, su peso ligero y resistencia la convierten en una herramienta imprescindible tanto para profesionales como para quienes buscan mejorar su equipo. Sin duda, una inversión inteligente para quienes buscan calidad, seguridad y eficiencia en cada soldadura. ¡Altamente recomendada! Andrés Mauricio Sánchez Cortes
J**N
Cristal Lincoln
Exelente producto lo recomiendo lo he usado y me parece un producto que cumple con lo que ofrece
M**K
Really good view
Awesome lens
J**Z
Excelente
Tuve que realizar un marco para que no quede floja en el porta vidrio pero todo bien
Trustpilot
2 weeks ago
2 weeks ago