... 2,50-100 rpm driving speed 3,engine model:LJ20 5.0HP 4,fuel economic Power Trowel Model:ST-30A ModelST- ... in high standard workshop, warehouse, parking lot, square, frame type building concrete floor construction.Features:1) Over-built gearbox assures ... is available as optional9) Detachable type of guard ring is available.The accessories of power trowel Clutch Cable Accelerator Cross Assembly The ...