Unscrewed to a

"Venerial" loops, although they look original, are very difficult to install. It is necessary to drill holes strictly at right angles. The adjustment of the loops is also not simple parts can only be wrapped/unscrewed to a multiple of revolutions. Small deviations for example, slope of the holes cannot be eliminated! So if you decide to put the "Violent" loops, then first practice scraps. Not sure of your capabilities, better put ordinary furniture.