This is the lionSteel Cutlery 1 Blade Jack, has Titanium Bolsters,  Santos Wood handles, and Titanium liners.  The blade steel is M390 and finish is Satin.

*Our opinion:  The pull is a 6.  The Lion Steel effort on this run as compared to their entire catalog is 8.

Maker : lionSteel Cutlery
Handles : Santos Wood
Factory ID : JK1ST
Pattern : Jack
Pet Name : 1 Blade
Condition : New/Mint
Blade Steel : M390
Steel Hardness : 59-60 HRC
Liners : Titanium
Bolsters : Titanium
Blade Type : Clip
# Blades : 1
# Backsprings : 1
*Pull (1-10) : 6
Closed Length : 3 7/8 inches
Longest Blade : 3 inches
Longest Sharp : 2 13/16 inches
Overall Length : 6 7/8 inches
Weight : 1.66 ounces
Half Stops : No
Factory Box : Yes
Blade Finish : Satin
Country : Italy
*Factory Effort : 8