Benchmade 290BK-1 Full Immunity Folding Knife — CPM-M4 Cobalt Black Wharncliffe, FDE Aluminum Handle

When blade length is restricted, necessity isn't. The Benchmade 290BK-1 Full Immunity is the compact EDC knife purpose-built for environments where blade length matters — whether that's a jurisdiction with length restrictions, a workplace with carry policies, or simply a lifestyle that demands a knife small enough to disappear in a suit jacket, running vest, or everyday pocket without drawing a second glance. This is a concentrated dose of full-fledged utility in the most pocketable Benchmade package available.

The Full Immunity doesn't apologize for its compact size — it leans into it. The sub-2.5" CPM-M4 super tool steel Wharncliffe blade (62-64 HRC) is one of the most capable blade geometries available in its class. The Wharncliffe's straight cutting edge runs parallel to the spine and meets at an ultra-fine, razor-sharp tip that excels at controlled push cuts, opening packages, detailed utility tasks, and any work requiring precision over brute force. CPM-M4 is a powder metallurgy super tool steel with exceptional toughness, outstanding edge retention, and outstanding wear resistance — the same steel found in Benchmade's most demanding tactical folders, now in a blade you can carry anywhere. The Cobalt Black Cerakote finish adds exceptional durability and corrosion resistance while giving the knife its signature stealthy, low-profile aesthetic.

The Flat Dark Earth anodized 6061-T6 billet aluminum handle scales are machined to precise tolerances, delivering a slim, comfortable grip that punches well above its 2.37 oz weight class. A lanyard is included for fast pocket retrieval — one quick pull brings the knife to hand for manual deployment in evolving situations. The AXIS Lock mechanism provides smooth, reliable one-handed operation and rock-solid lockup. A reversible deep-carry mini pocket clip keeps the Full Immunity riding exactly where you need it. Proudly made in the USA and backed by Benchmade's LifeSharp lifetime sharpening service.

Specifications:

• Blade Length: 2.49" (6.32 cm)
• Blade Thickness: 0.090" (2.29 mm)
• Open Length: 5.94" (15.09 cm)
• Closed Length: 3.46" (8.79 cm)
• Handle Thickness: 0.50" (12.70 mm)
• Blade Steel: CPM-M4 Super Tool Steel (62-64 HRC)
• Blade Style: Wharncliffe
• Blade Finish: Cobalt Black Cerakote
• Blade Edge: Plain
• Handle Material: Flat Dark Earth Anodized 6061-T6 Billet Aluminum
• Locking Mechanism: AXIS Lock
• Opener: Dual Thumb Studs, Ambidextrous
• Pocket Clip: Mini Deep-Carry, Reversible, Tip-Up, Black Oxide
• Lanyard: Included
• Weight: 2.37 oz (67.22 g)
• UPC: 610953206543
• Made in the USA

In Stock & Ready to Ship from ClassicBlades. As an authorized Benchmade dealer since 2003, every knife we sell is 100% authentic and covered by Benchmade's LifeSharp service. Available for pickup at our Fort Oglethorpe, GA store — usually ready within 24 hours. Or order online for fast shipping. Questions? Call us at 1-800-548-9412 — we're happy to help.