These are Justin Lundquist Exclusives, distributed in Australia by Adventure Carry.

The Feist XL draws from the original Feist design with an extra 30mm added to the overall length. The modern profile of the Feist takes inspiration from traditional knives but updated with clean, flowing lines for a sleek and minimalist look that will remain classy and timeless.
The refined, Minimalist look and perfect fit and finish sets the Feist XL apart from other EDC knives.

• CPM 4V Blade Steel (high impact toughness + wear resistant powder metal tool steel)
• Front flipper deployment
• Jimping on blade spine for grip
• Simple and comfortable handle profile
• Milling around the lock bar for increased lock access
• Versatile blade shape
• Deep carry pocket clip
• Pre-oiled scales
• JL Design
  

They all use CPM 4V tool steel - the beauty of this steel is that it has outstanding impact toughness while still maintaining impressive wear resistance, so its a very well balanced steel. All of that does come with a small trade off of corrosion resistance, though.