12PT1100. I purchased a Mighty Mac shredder-chipper (12PT) last fall. I want to tell you that it is a fantastic machine. Needless to say, I am very happy and impressed with the durability and job it does on saplings and tree branches. It’s a real tiger! It’s like THE LITTLE ENGINE THAT COULD! I am so happy to know we can still buy great equipment, made in the USA…….. April 2023.