I only heard about these a year or two ago. As the name suggests that are bigger and stronger than the normal strong boys. Apparently they can hold up both walls of a cavity which then means you can work on the outside without the acros obstructing you.
I like the sound of this and would like to give them a go but just wondered if anyone has used them or has any concerns that might not be a good idea?
I like the sound of this and would like to give them a go but just wondered if anyone has used them or has any concerns that might not be a good idea?