Ruike P831S-SB EDC folding knife | Black

Ruike P831S-SB folding knife – Understated elegance with uncompromising functionality

The Ruike P831S-SB is the logical evolution of a proven EDC concept – minimalist in design, reliable in technology, and uncompromising in everyday use. With its all-black "stealth" look, high-quality materials, and thoughtful construction, this folding knife is aimed at users who are looking for an inconspicuous, powerful, and stylish tool for everyday use.

Whether in an urban environment, when traveling, or as part of your outdoor equipment, the P831S-SB impresses with its functionality, safety, and understated aesthetics.

Ruike P831S-SB folding knife – Black design with character – functional & glare-free

The Ruike P831S-SB comes in all black. Both the stainless steel handle and the blade have a dark coating that minimizes reflections and gives the knife a modern, tactical and discreet look. This minimalist appearance makes the knife particularly inconspicuous – ideal for everyday use where discretion is required.

Precise cutting performance – Sandvik 14C28N steel

The 8.5 cm long reverse tanto blade is made of high-quality Sandvik 14C28N steel, a proven martensitic chrome steel for professional knife applications. Through targeted heat and low-temperature treatment, the blade achieves an optimal hardness of 57–59 HRC.

The result:

• excellent edge retention
• high corrosion resistance
• precise, controlled cutting performance

The black coating provides additional protection against environmental influences and reduces annoying light reflections.

Safe & intuitive – frame lock with release button

For maximum safety, the Ruike P831S-SB is equipped with a frame lock mechanism that reliably secures the blade in the open position. The side release makes it easy to close the knife safely and prevents the blade from folding unintentionally. The blade is opened manually using the flipper, supported by a ball bearing pivot point that enables quick, smooth opening.

Robust, lightweight & suitable for everyday use

Despite its sturdy construction, the P831S-SB weighs only approx. 93 g. The 3Cr14N stainless steel handle offers high abrasion and corrosion resistance and, thanks to its "sandblasted" surface, fits comfortably and securely in the hand. A discreet belt clip ensures that you can carry the knife with you at all times – in your pocket, on your backpack, or on your equipment.

Ruike P831S-SB at a glance

• 🔪 Knife type: Folding knife / EDC
• 📐 Total length: 195 mm
• 📏 Blade length: 85 mm
• 📏 Blade thickness: 3.1 mm
• 📐 Length when closed: 110 mm
• ⚖️ Weight: approx. 93 g
• ⚙️ Blade material: Sandvik 14C28N stainless steel (57–59 HRC)
• 📐 Blade shape: Reverse Tanto
• ✋ Handle material: 3Cr14N stainless steel, sandblasted
• 🔒 Lock: Frame lock
• 🔓 Opening: Flipper, ball bearing pivot
• 🎨 Design: Completely black, low-glare ("stealth" look)
• 🌍 Brand: Ruike – functional knives for outdoor & everyday use

A discreet EDC knife with clean lines

With the Ruike P831S-SB, you are choosing a high-quality folding knife that combines everyday practicality, safety, and elegant understatement. Robust, lightweight, and reliable – a knife for users who value function and do without unnecessary frills.

A quiet companion with strong performance – available at Swiss-Sale.ch.