Abstract: The invention relates to a device for using dumb-bells on a workbench with a bar including two supports suspended on the bar, wherein each support has a curved surface for placing the dumb-bells, and means for sliding and attaching the support along the bar. The device allows the position of the supports to be adjusted horizontally and vertically to fit to the user's dimensions. The device also has anti-rotation means to prevent the supports suspended on the bar from spinning. This configuration provides a more versatile assembly since it allows the slope of the device on the frame of the workbench to be changed according to the angle defined between the bar and the profile.