This is an Eureka Puzzle called "Reason Out" of a **** difficulty. I got this back in November and decided to take it out again. I got it stuck in this position
Eureka 3D String Puzzle Model B* - YouTube
Eureka string puzzles : Zen Cart!, The Art of E-commerce
Eureka 3D 473359 3D Puzzles : Amazon.com.au: Toys & Games
Puzzle Grand Master Puzzles TRIPLETS | Puzzle metal red Eureka 3D Puzzle 473253