Motorcycle Tire Machine M5806B & Assist Helper PL-320

What difference between tire changer M5806B and M5806B with assist helper PL-230?

The difference is the PL-230 assist arm. The M5806B is just the tire changer and the M5806B with PL-230 assist arm assists the user in installation of stiff side wall tires by pressing the bead down and rotates with the table.