Shear-Loc Thumb Screw Knobs. These pop onto SHC screws and turn them into thumbscrews. They work great. In my application, the thumb screw required more force to turn than I could apply with my delicate little fingers. In a situation where the screws can turn with less force, they will work fine.
I do not need them, but throwing them away seems silly. I have listed them on eBay, but if any on you want them, they are free, just pay for first class mail. There are two sizes: foe 4-40 and 8-32 SHC screws, 100 in a bag.
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