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🖤 Elevate your edge with the PROSTEEL black box chain — where style meets strength.
The PROSTEEL Stainless Steel Flat Box Link Chain Necklace is a 20-inch, 6mm thick men's necklace crafted from durable 316L stainless steel with a sleek black gunmetal matte finish. Featuring a hypoallergenic design and an improved lobster clasp, it offers both comfort and security. Packaged in a gift-ready box with a velvet pouch, this minimalist yet bold chain is perfect for everyday wear or layering with other jewelry.











































| ASIN | B0768RZ1VK |
| Accent Color | Black |
| Age Range Description | Adult |
| Band Material Type | Stainless Steel |
| Best Sellers Rank | #10,242 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #12 in Men's Necklaces |
| Brand Name | PROSTEEL |
| Chain Length | 20 inches |
| Chain Length Maximum | 51 centimeters |
| Chain Length Minimum | 45.72 centimeters |
| Chain Type | Box |
| Chain type | Box |
| Clasp Type | Lobster |
| Clasp type | Lobster |
| Closure Type | Lobster Clasp |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 3,875 Reviews |
| Decorative Plating | Gunmetal |
| Finish Type | Matte |
| Gem Type | No Gemstone |
| Item Dimensions | 20.08 x 0.24 x 0.24 inches |
| Item Thickness | 6 millimeters |
| Item Type Name | Necklace |
| Item Weight | 1.12 ounces |
| Item Width | 6 millimeters |
| Item display length | 51 centimeters |
| Item width | 0.6 centimeters |
| Manufacturer | Prosteel Jewelry |
| Material | Stainless Steel |
| Metal Stamp | 316L Stainless Steel |
| Metal Type | black-gun-plated-base |
| Metal type | Black-gun-plated-base |
| Number of Items | 1 |
| Occasion Type | Anniversary, Christmas, Father's Day, Happy Birthday, Valentines Day |
| Part Number | PSN2849H-20-AU |
| Pearl Shape | Round |
| Pearl Type | Simulated Pearl |
| Primary Stone Gem Type | No Gemstone |
| Setting Type | Band |
| Size | 20 inch(51cm) |
| Stone Color | black |
| Stone Creation Method | Simulated |
| Stone Cut | not-applicable |
| Stone Length | 6 millimeters |
| Stone Shape | Round |
| Style | 6mm-Cool Black |
| Style Number | PSN2849H-20-AU |
| Theme | Silver |
| UPC | 765470614026 |
| Unit Count | 1 Count |
A**B
PROSTEEL 6mm Black Stainless Steel Chain – Durable and Stylish
I’ve used this chain daily for over a year, including wearing a wire-wrapped gemstone pendant on it. It’s been through plenty of wear and travel, holding up well to regular use without irritation or tarnishing. The black plating still looks mostly intact, though it finally showed some wear after heavy use. Pros: Solid stainless steel with smooth finish Hypoallergenic and comfortable on skin Sturdy 6mm thickness, great for pendants Reliable lobster clasp that stays secure Comes with a nice box and velvet pouch Cons: Black plating can wear off after extended use Chain style is minimalist—better for layering or pendants than a statement piece Verdict: A reliable, no-frills chain that holds up well as a daily wear piece. I’m impressed with its durability and comfort, and would buy again for similar use.
D**.
Great quality, a year later
Fantastic quality, I've had this chain for over a year, rarely taken off. No fading, or any issues whatsoever.
N**Y
Great gift for 12 year old
Very nice chain for my 11 year old son. He wanted something that looked older but that he would feel comfortable wearing. He loves it. It is not a thin chain, you can't put a medal on it or anything else unless the hole is large enough for the chain to fit through. He didn't want anything on it but I am just pointing it out.
S**N
Sleek, Sturdy, and Stylish — A Solid Everyday Chain
Pros: Good value for stainless steel Comfortable and a descent weight Doesn’t tangle in hair Sturdy clasp and well-made links Easy to add charms Black finish is unique and fun Cons: Gold tone is a bit too brassy Chain is flat, not round as described I ordered the black 18-inch, 6mm necklace and paired it with the gold 22-inch version — both have been great everyday pieces. The black one feels fresh and modern, and it actually reminds me of a favorite necklace I had as a kid. The gold version looks fine but is a little too brassy for my taste. Both chains are comfortable to wear, don’t tangle in my hair, and are easy to add charms to. The clasp is sturdy, the links feel durable, and for stainless steel, they’re an excellent value. Just note that these are flat links, not round, despite the description. If you’re unsure about sizing, a quick measurement with a fabric tape will help you pick the perfect length. Overall, a stylish, well-made chain that’s worth adding to your collection.
M**E
Nice fit
Very well made
C**Y
Nice Weighty Black Chain
This is a beautiful sturdy and weighty black chain. It has a nice shine that doesn’t look Cheap at all. It’s actually kind of upscale looking and I could easily pair it with black earrings and a black bracelet and go out to a nice dinner. I’d purchase again for anyone. It’s advertised for guys but I wouldn’t limit it to just guys. :-)
M**S
awesome!!!
very nice. will be ordering one more
J**S
Great Link
I ourchased this for my son as a present and he loved it. It is tough and great quality and has good weight to it. It has not turn any color and has remained durable and shiny through 2 baseball seasons so far. The size is correct and ot feels great on him. No irritation or anything of that.
K**R
Good quality
Necklace is very smooth and flows nicely, metal feels heavy not cheap. Very happy.
Z**Y
Happy customer
Looks cool on me
R**N
Very unusual necklace
Very happy with this necklace, was well priced and was perfect for wat I wanted it for, love it
I**R
Ce n’est pas du tock
L’attache me semble un peu faible, avec le temps ont verra, le produit est de bonne qualité.
M**R
Look Great
Sits slightly shorter than expected but still a great chain.
Trustpilot
1 month ago
2 months ago