8PCS Adjust Frequency Screwdriver Anti-Static Plastic Ceramic Set Slotted and Phillips 90MM Color Blue

I bought these for watch repairing. They are utterly useless. The blades crumbled like plaster of Paris on first use. To be fair to the seller, they reimbursed purchase price without quibble within days.

Really not that strong. One tip disintegrated already. In fairness cheap as chips and not much stronger. Used a blade driver to adjust a stylus on a turntable (not a heavy duty job) when it broke. Just for potentiometers which they will be OK for, nothing else.

These are perfect. I use them on my 3D printer for changing the voltage on my stepper motors, & they are exactly what I needed as they are non-conducting.

Great tool for doing what it was designed for!

These are seriously great