D-Shape Aluminum Safety Carabiner 4KN/25KN – Climbing Lock

Professional D-Shape Aluminum Safety Carabiner – 4KN & 25KN

Built for serious outdoor adventurers and professionals alike, this D-Shape Aluminum Safety Carabiner delivers exceptional strength and reliability in a lightweight, ergonomic form. Whether you're scaling a rock face, managing aerial work, or securing heavy loads, this locking carabiner is engineered to perform.

Key Specifications

• Material: Hot-forged aluminum alloy – lightweight yet incredibly strong
• Styles Available: 4KN (recreational/key use) & 25KN (heavy-duty professional)
• Sizes:
  • 4KN: 58.2 × 33.3 mm (2.29 × 1.31 in) | Max load: 300 kg
  • 25KN: 99.7 × 58.5 mm (3.93 × 2.30 in) | Max load: 2,500 kg
• Colors: Black & Orange, Orange, Black & Red
• Shape: D-shaped locking gate design
• Quantity: 1 piece per order

Why You'll Love It

• ✅ Screw-lock gate provides secure, confident closure for safety-critical applications
• ✅ Hot-forged aluminum alloy construction ensures a high strength-to-weight ratio
• ✅ D-shape design keeps the load on the stronger spine of the carabiner for optimal load distribution
• ✅ Available in two load ratings – choose 4KN for everyday carry/keyring use or 25KN for professional climbing and rigging
• ✅ Three vibrant color options for easy identification and personal style
• ✅ Versatile for mountain climbing, rock climbing, outdoor trekking, aerial work, engineering protection, hoisting, and rescue operations

Ideal Uses

This carabiner is perfectly suited for:

• Rock climbing & mountaineering
• Outdoor adventure and camping gear attachment
• Aerial work and height-safety systems
• Engineering and rigging operations
• Rescue and hoisting applications
• Everyday carry (EDC) and keychain use (4KN model)

Package Includes

• 1 × D-Shape Aluminum Safety Carabiner (4KN or 25KN, your choice of color)

Made in Mainland China.

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Frequently Asked Questions

Q: What is the difference between the 4KN and 25KN carabiner options?

A: The 4KN carabiner is a compact, lightweight option ideal for everyday carry, keychains, and light-duty outdoor use with a maximum load capacity of 300 kg. The 25KN carabiner is a larger, heavy-duty version rated for up to 2,500 kg, designed for professional rock climbing, rigging, hoisting, and aerial work applications.

Q: What material is this carabiner made from?

A: This D-shape safety carabiner is constructed from hot-forged aluminum alloy, which provides an excellent balance of lightweight portability and high structural strength, making it suitable for demanding outdoor and professional environments.

Q: How do I choose the right color or size?

A: Select your preferred load rating (4KN or 25KN) and color (Black & Orange, Orange, or Black & Red) from the product options before adding to your cart. Please note that slight color variation may occur due to different screen settings, and allow 1–2 mm measurement tolerance.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.