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 Treasure Hunt Puzzle : Toys & Games - Amazon.com
SET 4 IN 1 EUREKA - EXTREME METAL PUZZLE - ROSSO - Logica Puzzles
Eureka BVBA – 30 years of brainteaser and 3D puzzle experience