These are Training Blades Made by Exiled Cutlery for your FU42 or other Balisong.

Exiled Cutlery Co. brings you the Kickass Model FU42 line of balisong knives. The Piston Cam Latch System Was Developed By Exiled Cutlery in 2011 To Have Three Locking Positions. The FU42 Model is just that a slap in the face to the Benchmade Knife Company. The FU42 Model does not violate any Patents. THE FU42 IS NOT A COPY OF THE BENCHMADE BM42 IT IS IT'S OWN CREATION WITH ITS OWN LATCH DEVICE MAKING IT UNIQUE BUT THIS PRODUCT IS INTENDED TO DIRECTLY COMPETE AGAINST BENCHMADE KNIFE COMPANY WITH A LOW COST AFFORDABLE ALTERNATIVE PRODUCT.

Solid Channel Construction Stainless Steel Milled Handles

Seven Blade Configurations:
4 Hole Trainer Blank 440c Stainless Steel
Unsharpened Weehawk 420 Stainless Steel
Plain Edge Weehawk 440c Stainless Steel
Plain Edge Weehawk 420 Stainless Steel
Serrated Edge Weehawk 440c Stainless Steel
Tanto 440c Stainless Steel
Clip Point 440c Stainless Steel

Domed Head Piston Cam:
Solid 18-8 Stainless Steel
3/32" Diameter, 1/4" Length

Aluminum Spring Retainer Spacer Clip

Steel Music Wire Zinc Plated Springs

Latch, Pivot & Handle Hardware:
416 Stainless Steel, Heat Treated to RC 36-40

Pivot Screws:
18-8 Stainless SteelSelf-Locking Button Head Socket Cap Screw

Handle Hardware Screws:
18-8 Stainless Steel Button Head Socket Cap Screw

18-8 Stainless Steel has an excellent corrosion resistance.  Minimum Rockwell hardness is B70. Minimum tensile strength is 70,000 psi
Self-Locking Button Head Socket Cap Screw

Delivered in Blade style, Handle syle shown.

Specifications:
Blade Length: 4"
Blade Thickness: 0.12"
Overall Length: 9 3/8"
Closed Length: 5 1/2"
Weight: 5.6oz