The CO-OP B2 Jr. is a farm/agricultural tractor built by CO-OP in Shelbyville, Indiana, USA. It features a Continental 4-cylinder gasoline engine rated at 1500 RPM, delivering a claimed PTO power of 33.4 hp (24.9 kW). The tractor uses a mechanical transmission with two-wheel drive and weighs 3,100 lbs (1406 kg).