2020 TWINPAK SB3XR Double Square Baler — Located In: Elk Grove, CA Clean, serviceable GPT Twin Pak SB3XR double square baler — PTO-driven, high-capacity unit with extras. Key Details Year/Model: 2020 TWINPAK SB3XR Serial #: 20-163600-015 Location: Elk Grove, California Condition: Used Drive: PTO (1000 rpm) Bale Count: 169,056 bales Extras: Extra parts available