Description

2900BK Auto Immunity™ | Crater Blue Aluminum | Wharncliffe

When blade length is restricted, necessity isn’t. Designed for ease of concealment and compact utility, the 2900BK Auto Immunity™ features a sub-2.5-inch CPM-M4 blade with a Cobalt Black Cerakote finish, boasting outstanding edge retention and strength in a Wharncliffe profile tapering to an ultra-fine point. The included lanyard speeds up retrieval from the pocket for quick deployment via the ambidextrous Auto AXIS mechanism, enabling rapid response in evolving situations. Finished with anodized Crater Blue aluminum handle scales, the 2900BK Auto Immunity™ is a concentrated dose of full-fledged utility in a compact configuration.

• Open Length
  • 5.94” | 15.09cm
• Blade Length
  • 2.49” | 6.32cm
• Blade Thickness
  • 0.09” | 2.29mm
• Closed Length
  • 3.46” | 8.79cm
• Handle Thickness
  • 0.5” | 12.7mm
• Mechanism
  • Auto AXIS® Lock With Integrated Safety
• Blade Style
  • Wharncliffe
• Handle
  • 6061-T6 Anodized Aluminum
• Pocket Clip
  • Reversible tip-up black oxide Mini deep-carry
• Blade Finish
  • Cerakote®
• Blade Color
  • Cobalt Black
• Clip Color
  • Black
• Clip Finish
  • Black Oxide
• Clip Position
  • Tip-Up
• Clip Type
  • Mini deep-carry
• Ambidextrous
  • Yes
• Handle Material
  • Aluminum
• Handle Color
  • Crater Blue
• Lanyard Hole
  • Yes
• Blade Steel
  • CPM-M4 High Speed Steel (62-64HRC)
• Weight
  • 2.37oz | 67.19g

Use & Care

• Proper care and regular maintenance help make your Benchmade knife yours, for life. Here are some tips for keeping your Benchmade in peak condition
• All steel, regardless of price and grade, can eventually rust, so it’s important to keep your knife dry and lubricated. If spotting or rust occurs, semi-chrome metal polish will often take care of it.
• Dishwashers can cause serious damage that is not covered under our warranty, so make sure to hand-wash your Benchmade under warm water with dish soap only, and dry thoroughly.
• Remember, knives are cutting tools, and you should never use your knife as a pry-bar, screwdriver, chisel, or punch, unless the knife is designed explicitly for those purposes.
• If you choose to sharpen your blade yourself, avoid grinding wheels and other high-powered machinery.
• Handle, pivot, and pocket clip screws may require occasional adjustment using T6 & T10 Torx drivers. We recommend applying a small dab of releasable thread-locker as needed.