survival knife

Here you can see the Don Post Studios Survival Knife and Sonic Beam Weapon tools in the Star Wars Visual Dictionary. They were never used on screen and were not made by ILM. The Anti-Security Blades pictured are the real shin tools from the original costumes.

Boba Fett made by Don Post Studios in 1996 utilizing original reference materials. DPS took several creative liberties, deviating from the screen used, ILM made costumes. Some of these additions were included in the Star Wars Visual Dictionary. This is the origin of these incorrect tools.