4 ms·
Except that there are only three common sizes of Robertson that are impossible to confuse, and the drivers are always colour-coded (a "red robby" is a #2 Robert
by frosted-flakes 4y ago
Except that there are only three common sizes of Robertson that are impossible to confuse, and the drivers are always colour-coded (a "red robby" is a #2 Robertson, green is #1, and yellow is #3). Nearly all screws will be #2 #1. #3 (huge) is uncommon and #0 (tiny) is very uncommon.
- booi 4y agoHonestly it’s the same with philips. #0-#4 will cover 99% of cases. But in a pinch, a thin #2 will unscrew all of them.
- frosted-flakes 4y ago> impossible to confuse Read that part again. It's definitely not true of Philips.