FTM500 countersunk mount

i actually use a dell rugged tablet as the screen and onscreen keyboard i use the FTM500 as a cross band r between my truck which has a ftm400 so 440 in 2meter RF link with 440 out i know its backwards but its a private repeater we use when we are in the woods so we don't interrupt other 2 meter repeaters around us and i double with the dell rugged tablet with cell service as an APRS digipeater with the FTM500