Apparently this thing may be called one of a few of these names and is made by an industrial manufacturer:

For pump stations and headworks the third generation Channel Monster® XD surpasses all existing technologies in terms of performance, durability and reduced costs. The system protects pumps and prevents ragging and clogging problems.

The patented Channel Monster integrates rotating screening drums with proven Muffin Monster® grinder technology. The system accommodates high-flows while shredding solids (such as rags, trash, rocks and wood) into particles that flow harmlessly through pumps, pipes and processes. Screening drums direct solids into the cutters and are made of 1/2” (12mm) stainless steel coil. JWCE offers optional perforated screening drums with 1/4” (6mm) circular openings for higher capture efficiency. Channel Monster XD comes in three sizes – 2.0, 2.5 and 3.0.

One commenter Joachim says:

Put a damn diamond in it! That’ll destroy the machine.

Vivac replies:

Diamonds are very hard, but they’re also very brittle. You can shatter diamonds pretty easily with just a hammer, you just can’t cut them.

We hope you enjoy the video.

thanks to jwce.com for the great info