Mostly in construction. Robertson was a Canadian, and you see them a lot in Canada. In the US largely they use Phillips or something that looks like Phillips and a six-lobed star shape.
I like Robertson because the bits are much less fragile, and very inexpensive. They’re also much less likely to strip out a screw with a square hole than something that needs little pieces of metal sticking into the bit hole.
I don’t think I’ve ever encountered one, but I can see their value. Where are they used?
Mostly in construction. Robertson was a Canadian, and you see them a lot in Canada. In the US largely they use Phillips or something that looks like Phillips and a six-lobed star shape.
I like Robertson because the bits are much less fragile, and very inexpensive. They’re also much less likely to strip out a screw with a square hole than something that needs little pieces of metal sticking into the bit hole.