T-type Nylon Handle Thumb Screw (Pack of 5)

Thumb screws offer a hand-adjustment feature, which allows for simple action to fasten, tighten, loosen, or remove the screws. The main benefit is that no tools are needed, so assembly teams and end-user consumers can adjust the screws with thumb and forefinger alone

The two arms provide a flat surface to push your fingers against. Length is measured from under the head.