Is it strong enough for a 250-pound adult?

Each kilo newton is 224.81 lb so with a 15-1 safety factor a 50 kn device can hold 11,240.44 lb total, that is 749 lb of load. A kernmantle rope can hold as much as 9000 lb And a 24 kn carabiner (read its rating and safety factor) can hold 5395.41 lb. So Remember you are as strong as your weakest link. Read all before you hang on a rope.

What material of it? Is it durable? I need to be safe...

It is made of aluminum. It appears to be very durable, but I haven’t used it yet. I also need it to be safe.

Does it have any international certification.. ??

It is NOT UIAA rated. I returned mine. It is also big and heavy when compared to the Black Diamond figure 8, which sells for about the same price, is UIAA rated and is smaller & lighter.

How large diameter of rope is this rated for?

The applicable rope diameter is 8-13mm.

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🧗‍♀️ Elevate your climb — safety and control that won’t let you down!

ROPE FRIENDLY THICK BODY - Minimizes rope wear and abrasion, extending your gear’s life and keeping your climbs smooth and safe.
PREMIUM 7075 ALUMINUM ALLOY BUILD - Lightweight yet ultra-durable aircraft-grade material for long-lasting performance without the bulk.
UNMATCHED SAFETY WITH 50 KN STRENGTH - Engineered to withstand up to 11,000 lbf, ensuring rock-solid reliability when every second counts.
BENT EAR DESIGN FOR PRECISION CONTROL - Innovative ears increase friction, allowing you to hang mid-air or slow descent with effortless finesse.
VERSATILE FOR ALL VERTICAL ADVENTURES - Perfect for rock climbing, rescue missions, aerial silks, and technical rope work — be ready for anything.

The AOKWIT 50KN Rescue Figure 8 Descender is a high-performance belay device crafted from aircraft-grade 7075 aluminum alloy. Designed with a thick bent-ear figure 8 shape, it offers superior braking strength of 50KN (11,000 lbf) and enhanced friction control for smooth, safe descents and mid-air hangs. Ideal for rock climbing, rescue operations, aerial silks, and technical rope work, this lightweight 282g device combines durability, versatility, and precision to meet the demands of professional climbers and rescue teams.

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Color	Red
Size	6.7×6.7inch/17×17cm
Shape	Figure 8
Material Type	Aluminum Alloy
Batteries Included?	No
Brand	AOKWIT
Manufacturer	AOKWIT
Item model number	SMCRF1
Product Dimensions	17.02 x 17.02 x 0.1 cm; 282 g
ASIN	B07W7T33XC

50KN Rescue Figure, 8 Descender Large Bent-Ear Belaying and Rappelling Gear Belay Device Climbing for Rock Climbing Peak Rescue 7075 Aluminum Alloy

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