Are they uiaa certified?

I believe so. They have CE and KN rating so they are at least CE certified. I dont use them as lifeline due to still not 100% trusting in them, I use them for rigging limbs for ziplines or soft drops. Amazing feeling carabiners tho. Would recommend for rigging. For Lifeline go with Petzl or another known name brand.

Has there been stress-testing done, trying to collapse the lock from the outside in?

Probably a question for the manufacturer. I can tell you that I use these to connect my deer stand climbing harness to my safety line. Last year in a pouring rain when I slipped, I didn't hit the ground! PTL.

Is this strong enough to replace a collars d-ring to sustain heavy pulling by a 90lbs male german shepherd?

I have a 100 lb Czech working line GSD that is incredible strong, and I bought this for a tie out in my front yard. Since he's broken a collar and a harness running at people walking their dogs past our yard, I decided to beef everything up. I can confirm this will not break with a GSD running full speed and trying to get to another dog. If you're using it as part of a leash, you'll lose an arm before this thing breaks.

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FVW Auto Locking Rock Climbing Carabiner Clips, UIAA Certified Professional 25KN (5620 lbs) Heavy Duty Caribeaners for Rappelling Swing Rescue & Gym etc,Large Carabiners,D-Shaped

FVW Auto Locking Rock Climbing Carabiner Clips, UIAA Certified Professional 25KN (5620 lbs) Heavy Duty Caribeaners for Rappelling Swing Rescue & Gym etc,Large Carabiners,D-Shaped

Product ID: 237546314

Details

Brand
FVW
Color
3*black
Item Weight
9.6 ounces
Recommended Uses For Product
Camping
Shape
D-Shape

🔒Auto-locking twist gate for secure one-hand operation

🪂25KN (5620 lbs) ultra-strong load capacity

✈️Aircraft-grade 7075 aluminum alloy, lightweight & durable

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COP 201415

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
FVW
Color
3*black
Item Weight
9.6 ounces

Description

🔗 Lock in safety, unlock your adventure.

MULTI USE MASTERY - Perfect for climbing, camping, hiking, rescue, or everyday carry—gear up like a pro.
LIGHT AS AIR TOUGH AS STEEL - Premium aircraft-grade aluminum alloy keeps gear light but rock-solid.
GENEROUS SIZE FOR VERSATILE USE - Large 4.5" x 2.9" D-shape fits everything from climbing ropes to heavy-duty dog crates.
EFFORTLESS SECURITY WITH ONE HAND - Twist-lock design lets you lock/unlock quickly without fumbling.
UNMATCHED STRENGTH ZERO COMPROMISE - Certified 25KN load rating means your safety is never in question.

The FVW Auto Locking Rock Climbing Carabiner is a UIAA certified, heavy-duty D-shaped clip crafted from aircraft-grade 7075 aluminum alloy. Rated to hold an impressive 25KN (5620 lbs), it features a secure twist-lock mechanism operable with one hand for quick, reliable locking. Sized at 4.5" x 2.9", it’s designed for professional climbing, rescue, and versatile outdoor applications, combining lightweight portability with rugged durability.

Specifications

ASIN	B08J3Y5G4D
Best Sellers Rank	#12,378 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #8 in Locking Climbing Carabiners
Brand	FVW
Brand Name	FVW
Color	3*black
Customer Reviews	4.7 out of 5 stars 2,257 Reviews
Item Dimensions L x W	4.5"L x 2.9"W
Item Weight	0.6 Pounds
Lock Type	Screw Lock
Manufacturer	Zhejiang Jinrui Hardware Rigging Co. Ltd
Recommended Uses For Product	Camping
Shape	D-Shape
UPC	769044711920 769044269841

Reviews

A**X

23.12.2025

J**S

5.02.2021

S**S

15.01.2026

R**T

22.02.2023

J**S

1.09.2025

M**O

12.04.2026

J**O

17.05.2025

T**M

20.01.2026

J**N

23.09.2024

し**ん

20.01.2026

J**Y

19.12.2022

A**R

16.02.2026

A**ー

22.05.2024

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COP 201415

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In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

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