NEW Grass Cabinet Hinge Black Screw Cover #12350-41 (also called "Cover Cups" by the manufacturer)
These hard to find covers are black plastic and covers the adjusting screws on the 3703 model of the 1006-30 Full Overlay Hinge
It does not fit the 3704 model of the 1006-30 Half Overlay Hinge
$1.99 Price is for ONE cover