Back to Bearcat Products 70544 Specifications 70554 70520 Engine PTO* PTO** Hopper Size 20"x30" 20"x30" Chipper Shredder 4 chip blades 36 shred knives 4 chip baldes 36 shred knives Clutch direct drive direct drive *NOTE - Model 70544 Tractors with 540 rpm PTO Drive, Engine HP Ratings from 13 hp diesel and 15 hp gas to 40 hp. **NOTE - Model 70520 - Tractors with 2000 rpm PTO Drive Only.