Benchmade 590BK Boost AXIS-Assist Knife Black/Gray (3.7" Black)

For Size Reference For Size Reference
Benchmade 590BK Boost AXIS-Assist Knife Black/Gray (3.7" Black)
MSRP: $180.00
Our Price: $153.00
In Stock!
Add to Wishlist
Item #BHQ-51618


  • Overall Length:8.52"
  • Blade Length:3.70"
  • Blade Thickness:0.12"
  • Blade Material:CPM-S30V
  • Hardness:58-60 RC
  • Blade Style:Drop Point
  • Blade Grind:Flat
  • Finish:Black
  • Edge Type:Plain
  • Handle Length:4.83"
  • Handle Thickness:0.70"
  • Handle Material:Polymer
  • Color:Black, Gray
  • Frame/Liner:Stainless Steel
  • Weight:4.59 oz.
  • User:Right Hand, Left Hand
  • Pocket Clip:Tip-Up
  • Knife Type:Spring Assisted
  • Opener:Thumb Stud
  • Lock Type:AXIS®
  • Brand:Benchmade
  • Model:Boost
  • Model Number:590BK
  • Country of Origin:USA
  • Best Use:Everyday Carry
  • Product Type:Knife


The Benchmade Boost is a fast-action AXIS-Assist knife featuring an integrated safety and a solid ergonomic design. This 590BK model has a black finished CPM-S30V premium stainless steel blade with a plain cutting edge. Its handle is built with dark gray Grivory and black overmolded Versaflex for added strength and increased grip performance. Ambidextrous use is supported with dual thumb studs and a reversible tip-up clip. Give your EDC the ol' Benchmade Boost!

  • CPM-S30V blade steel offers top-notch cutting performance.
  • Dual durometer handles provide a durable, grip enhancing build.
  • Fully ambidextrous for right and left handed operation.

Customer Reviews

Write a review for this item
Overall pretty great
Chris W.
The handle is just a bit thick and the rubber sticks to your pants, together they make it a bit difficult to pocket carry. The assist is also a bit strong for my liking. But I think those are all preferential negatives and fairly minor compared with the overall quality of the knife. The blade is a perfect shape to handle 95% of the tasks I use it for and holds an edge well without being too brittle, I've dropped my knife blade down numerous times with no ill effects. And the handle materials work really well for dirty jobs. I've gotten various chemicals and glues on mine at work and they clean off without damaging the handle at all. Overall this is a great knife and is my go to for EDC.