This is a nice package of equipment at a great price.  It starts with a Barclay 6P that is running great, then goes to a Columbus McKinnon 2 speed shredder.  The CM has 1.6 inch knives that are double stacked for a 3.2 inch cut.  Then the material goes to an Action Screen with 2 inch decks installed, and a spare set of 1 inch stainless steel decks.  The owners have taken good care of this equipment, checking the knives every morning for missing bolts, cracked knives, etc.  They also grease the bearings twice a day, once before work and once at lunch time.  They can shred of course car and semi truck tires, but also super singles.