Comparison : Item # 20200, Worm Gear Reducer Model 202 Shaft-Mounted Worm Gear Reducer
Item # 20201, Worm Gear Reducer Model 202 Shaft-Mounted Worm Gear Reducer
Item # 20202, Worm Gear Reducer Model 202 Shaft-Mounted Worm Gear Reducer
Item # 20203, Worm Gear Reducer Model 202 Shaft-Mounted Worm Gear Reducer