Set of 3 for all acs staircase vaastu defects ACS staircase can be used to correct the ACS staircase directions as per vaastu. This yantra is specially designed with small pyramids that will not disturb or affect while you go up and down. If the staircase direction is not clockwise than do not worry, fix 3 Staircase on first three risers of acs staircase. In the same way the risers must be in odd numbers, if it is not than you need to correct it in the same way.