This karambit from Smith & Wesson is definitely the karambit you want. Not only is the material strong and the blade is sturdy, but it can be used to thrust as well as hook. The fingerhole is more generous than other models and the torque is adjustable. I fell in love with this one right away. I only hope S&W keeps making it.

Blade Style:	Single Edged
Blade Length:	3 1/8 inches (8 cm)
Overall Length:	8 3/8 inches (21 cm)
Hole Diameter:	1 inch (2.5 cm)
Handle Material:	G-10
Blade Material:	Surgical Steel