Sanrenmu Partner PT721 Folding Pocket Knife with Scissors

The Sanrenmu PT721 is a compact folding knife with a minimalist design, created for everyday carry (EDC). Its slim profile, just 8 mm thick, makes it comfortable to carry in a jeans pocket or backpack.

It is made entirely of stainless steel—the blade is made of Sandvik 12C27, and the handle is made of 3Cr13. The design is elegant enough to complement even a business suit.

Key Benefits of the Sanrenmu PT721

Sandvik 12C27 steel blade with a hardness of 58–59 HRC
Cryogenic treatment by SRM for optimal sharpness and stability
Built-in scissors, 75 mm long
Weighs only 76 grams
Slip Joint Locking Mechanism
Handle thickness: 8 mm—an exceptionally slim profile

Sandvik 12C27 Steel—Why It's Important

Sandvik 12C27 is a martensitic stainless steel optimized for high-quality knives. It provides excellent sharpness, edge stability, and corrosion resistance.

For the PT721 model, the steel has undergone cryogenic treatment to achieve a hardness of 58–60 HRC.

Slip Joint Mechanism – How It Works

A slip joint is a simple mechanism with a tensioned spring that holds the blade in the closed position. To open it, a tab or pin is used to overcome the spring tension.

The blade is held open by a return spring but is not locked in place. Care must be taken to prevent it from closing unexpectedly if pressure is applied in the wrong direction. Many traditional pocket knives use this exact type of mechanism.

Specifications	Value
Brand	Sanrenmu
Model	Partner PT721-SK
Type	Folding knife
Total length	168 mm
Blade Length	74 mm
Blade thickness	2.5 mm
Steel on the blade	Sandvik 12C27 stainless steel
Hardness (HRC)	58-59
Handle Length	92 mm
Handle Thickness	8 mm
Handle Material	3Cr13 Stainless Steel
Weight	76 years
Locking mechanism	Slip Joint
Additional Tools	Scissors – 75 mm
Country of Origin	China

Frequently Asked Questions

Is the Sanrenmu PT721 suitable for everyday wear?

Yes, the PT721 is designed specifically for everyday carry (EDC). The handle is only 8 mm thick, and it weighs 76 grams. It fits easily in a jeans pocket or a small compartment in a backpack. Its minimalist design also makes it suitable for more formal occasions.

What type of steel is used for the blade of the PT721?

The blade is made of Sandvik 12C27 steel—a martensitic stainless steel with a composition optimized for high-quality knives. It provides excellent sharpness, stability, and corrosion resistance. For the PT721 model, the steel has also undergone cryogenic treatment by SRM, which brings the hardness to 58–60 HRC.

What is a slip joint, and is this mechanism safe?

A slip joint is a mechanism in which a spring holds the blade in an open or closed position without a fixed lock. The blade is opened with a thumb stud or a pin and is held open by a return spring. If pressure is applied in the wrong direction, the blade may close unexpectedly, so caution is required during use. The slip joint is a traditional mechanism used in many classic pocket knives.

Are scissors included with the PT721 set?

Yes, the Sanrenmu PT721 features built-in scissors that are 75 mm long. This makes it a more practical tool for everyday use. The scissors are an integral part of the knife’s design, not an additional accessory.

What material is the handle of the Sanrenmu PT721 made of?

The handle is made of 3Cr13 stainless steel. It is 92 mm long and 8 mm thick. The entire knife construction—including the handle and the blade—is made of stainless steel, which ensures durability and resistance to moisture.

How much does the Sanrenmu PT721 weigh, and what are its dimensions?

The knife weighs 76 grams. Its total length is 168 mm, the blade length is 74 mm, and its thickness is 2.5 mm. The handle is 92 mm long and only 8 mm thick, making the knife very slim and comfortable to carry.

Where can I buy the Sanrenmu PT721 at a good price in Bulgaria?

The Sanrenmu PT721 is available at Dulotec.COM—an online store for high-quality tactical gear and EDC tools. Orders are processed quickly, and products are shipped throughout Bulgaria.

Weight

0,076 kg

Dimensions

0,8000 cm