Rubber grommets push into place to protect wire, cable and cords by turning rough-edged and uneven holes into smooth, insulated holes. Sized to work with Custom Dynamics Dual Color (4 wire) LED Latch Lightz on OEM Harley-Davidson hard saddlebags. Grommet measurements: 9/16″ hole diameter, 1/8″ inner diameter, and 3/4″ flange diameter.