STANLEY® FATMAX® Auto-Retract Tri-Slide Safety Knife

Product Overview

This FATMAX® Auto-Retract Tri-Slide Safety Knife has a pressure-sensitive blade that automatically retracts once disengaged from the cutting surface. Its oversized, contoured tri-slide button can be engaged from three positions (top, left, and right side). With three blade depth settings to limit blade exposure and a blade lock to help prevent accidental blade exposure, this is a great cutting solution for corrugate, tape, and more. When working continuously with cutting tools in a fast-paced environment, accidents can happen. You can help reduce the risk of cuts, lacerations, and punctures on the job with the STANLEY® line of safety knives.

Additional Features

  • Blade lock helps prevent accidental blade exposure.
  • Lightweight design helps reduce user fatigue.**
  • Quick, toolless blade change.
  • Integrated blade storage in handle.
  • Lanyard hang hole for easy transportation and storage.


  • Cut straps
  • Tape
  • Shrink wrap
  • Corrugate
  • Plastic
  • Twine


  • (1) Auto-Retract Tri-Slide Safety Knife
  • (4) Round-Point Utility Blades


Product Length
1 in



  • Limited Lifetime Warranty

We're confident of the quality of our products and we'll repair, without charge, any defects due to faulty materials or workmanship within the specified warranty.

Learn More


We take extensive measures to ensure all our products are made to the very highest standards but on the rare occasion that you need our help & support, we've got you covered.

Support Manual


  • **Compared to metal knives.