... reducer, integrated sealed switching controller, dynamic hydraulic/ electromagnetism brake, and three phase asynchronism crane motor. Steel welded drum ... drum when power loose, also can plus mechanical brake. With bolt holes on bottom for mounting. Shipping ... by customer required, for example groove drum, double brake and so on..ModelJM2JM3JM5JM8JM10Line pull capacity (kg)200030005000800010000average ...