Ruike Criterion Collection S31 Multifunction Knife — Brown

The Ruike S31 from the Criterion Collection series is a compact and reliable folding knife that will be useful in everyday life, tourism, and camping. This model combines an ergonomic design, quality materials, and a set of tools that allow you to solve a wide range of tasks: from cooking and opening packages to minor repairs and immediate household needs. The description below contains complete information about the model's characteristics, package contents, and warranty obligations.

Model Overview: The Ruike Criterion Collection S31 knife is a folding tool from the Ruike brand with a brown handle, also available with black and dark green scales. The model features a well-thought-out arrangement of metal liners and G10 scales, ensuring structural strength and comfort during use.

Materials and Manufacturing Quality

The blade and additional tools are made of Sandvik 12C27 steel, hardened to 58-59 HRC, which guarantees resistance to wear, mechanical stress, and good corrosion resistance even after prolonged contact with water. The handle is formed on the basis of several massive metal liners and comfortable G10 scales.

Technical Specifications

• Knife type: folding
• Length unfolded: 122 mm
• Length folded: 71 mm
• Blade length: 53 mm
• Blade thickness at spine: 2.0 mm
• Blade shape: Drop-point
• Cutting edge grind: plain along the entire length
• Number of additional tools (according to specification): 2
• Blade and tool material: Sandvik 12C27 stainless steel
• Rockwell hardness: 58-59 HRC
• Lock type: Slip-Joint
• Handle scales: G10
• Available handle options: black, brown, dark green
• Lanyard hole/ring present at the end
• Knife weight: 52 grams

Package Contents and Tools

Despite the description stating that the model is equipped with three tools, the list of characteristics also indicates the number of additional tools as 2. Below is a complete list of tools present in the model:

• 1. Long blade
• 2. Keyring/lanyard ring
• 3. Scissors
• 4. Bottle opener
• 5. Strap cutter
• 6. Small 4 mm screwdriver

All tools are made from the same Sandvik 12C27 steel, ensuring their durability and effectiveness in use.

Ergonomics and Use

The G10 handle provides a secure grip even in wet conditions; massive liner bases add rigidity to the structure. The presence of a lanyard ring allows for convenient attachment of the knife to a belt or keychain. The Slip-Joint locking mechanism makes operation simple and safe for everyday use.

Warranty and Marking

The official warranty for the Ruike S31 folding knife is 5 years. The blade may have a marking in the form of a triangle with numbers: the triangle indicates the year of manufacture, and the numbers indicate the month the knife was produced.

Who is the Ruike S31 suitable for: For those who need a compact multifunction tool with reliable steel and good ergonomics — tourists, fishermen, hunters, as well as for everyday carry as an EDC knife in the city.

Brand: Ruike. Product category: Camping & Tourism > Tourism > Multifunction Knives.

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