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Finally, a tool tip that actually stays seated on the driver instead of wobbling off mid-turn. The large size grips the 4-40 hardware snugly, and it's made my small parts assembly way less fiddly.

The small tip fits the M2 hardware perfectly, which is a huge relief after struggling with other drivers that kept slipping. It’s nice to finally have a set that actually matches the scale properly without any wobble.

Finally got a tool that actually grips these tiny 4-40 scale screws without stripping them. The large tip seats perfectly and makes adjustments on my RC heli much less frustrating.