Just prohormones, nothing special but fancy names - so unknowing buyers think they're getting 'roids!
If you take enough prohormomes, the correct way, you can make good gains - I've done this. Drawbacks: they do shutdown your HPTA (so I wouldn't do them between cycles), same sides as 'roids, and to use effectively - they cost more than 'roids!
Animal has kits for converting prohormones to injectibles. Myself, I haven't done this. I've read where others have and stack it with roids, with decent results. The ones that seem to be the best are 1-test and 4-androstenediol. Also they must be at least 99% pure for good conversion. Myself, I wonder how they can distinquish between the effect of 'roids and those of prohormones.