Series 10 The 12 forward/12 reverse transmission gives you four gears in each of three ranges. A synchronized reverser is standard to make repetitive forward-to-reverse loader faster.
Series 20 The 12 foward/12 reverse transmission gives you four gears in each of three ranges. A synchronized reverser is standard to make repetitive forward-to-reverse loader faster.
Series 30 The 24 foward/24 reverse transmission gives you four gears in each of three ranges plus a creeper gear. A synchronized reverser is standard to make repetitive forward-to-reverse loading faster.