Hi all. While start investing to cut into the wall to install a double so let I came across this. OK I'm running into a few technical issues here, The predictive text should read Stud Walling Obstruction. The photo from my smart phone is too large to upload which seems odd. There is basically what looks like a stud next to the single socket I am upgrading but it's not wood but some greyish dense material that is quite hard but you can dent it with a screw driver tip. Anyone know what it is and if it can be cut into neatly?