Because they aren’t the same, or compatible with eachother really. I use them a lot and can almost promise you the problem is when you involve the “square” one’s at all. Robertsons all have a taper, so you can kinda use square bits/screws either each other, but they will chew the shit out of each other. Squares will always slip/strip, Robertson is far better IME.
Because they aren’t the same, or compatible with eachother really. I use them a lot and can almost promise you the problem is when you involve the “square” one’s at all. Robertsons all have a taper, so you can kinda use square bits/screws either each other, but they will chew the shit out of each other. Squares will always slip/strip, Robertson is far better IME.