Specification
| Make | Billy Goat | Classen | Classen | Ryan |
| Model | PR550H | TR-20H | TRC-20H1 | Ren-O-Thin IV |
| Engine | Honda 5.5 HP | Honda 5.5 HP | Honda 5.5 HP | Honda 5.5 HP |
| Optional Blade Reels | Spring Tine & Vertaslicing | Adjustable up to 1-3/8" | Adjustable up to 1-3/8" | Verticut: 3/4 – 2" spacing |
| Standard Blade Reel | Flail type | Flail type: 11/16" spacing | Flail type: 11/16" spacing | Flail type: 1" spacing |
| Weight | 162 lbs | 135 lbs | 165 lbs | 135 lbs |
| Working Width | 20 " | 20 " | 20 " | 18 " |
