The SOG Pentagon OTF delivers premium steel performance in a compact tactical package. This out-the-front automatic knife combines CPM S35VN blade steel with precision engineering for professionals who demand reliable deployment and superior edge retention.
What Makes This Different
The Pentagon features CPM S35VN steel, a powder metallurgy alloy that outperforms standard stainless steels in both edge retention and corrosion resistance. The Black TiNi Cryo treatment adds a protective coating while reducing friction for smoother deployment. Unlike basic OTF knives with 440C steel, this model maintains sharpness through extended use and resists chipping under heavy cutting tasks.
Key Features
- CPM S35VN premium steel blade with superior edge retention and toughness
- Black TiNi Cryo coating reduces friction and enhances corrosion protection
- 3.79-inch spear point blade optimized for piercing and utility cutting
- Blackout aluminum handle provides lightweight durability at 4.2 ounces
- Dual-action OTF mechanism for ambidextrous operation
- Pocket clip positioned for tip-up carry and quick access
- Glass breaker pommel adds emergency functionality
Field performance centers on the blade's ability to maintain a sharp edge through rope cutting, cardboard breakdown, and general utility tasks. The OTF mechanism operates smoothly in temperatures from -10°F to 120°F, making it suitable for law enforcement, military personnel, and emergency responders. The spear point geometry penetrates materials efficiently while the plain edge handles detail work without snagging.
Technical Specs
- Overall length: 8.75 inches open, 5.0 inches closed
- Blade length: 3.79 inches
- Blade steel: CPM S35VN with Black TiNi Cryo coating
- Handle material: 6061-T6 aluminum with blackout finish
- Weight: 4.2 ounces
- Blade thickness: 0.125 inches
- Made in Taiwan with SOG limited lifetime warranty
The Pentagon represents SOG's commitment to premium materials and precision manufacturing. Professional users choose this model for its proven steel performance and reliable deployment mechanism that functions when other knives fail.