Brand: AIM Sports
This round insert is designed specifically to fit into a rubber button cover on an AiM PDM keypad (Part Nos. MC-KEY08 or MC-KEY12, sold separately). The back of the insert has a flat tab which fits into the cross-shaped slot on the keypad button. Sold individually.
This "Arrow" insert has a black background with a plain one-direction arrow in the center. (Note that the cross-shaped recess in the keypad buttons will let you aim this arrow left, right, up, or down.)