Autozonic Backup Parking Sensors with Display Charcoal and Silver Sensors 4 "in-bumper" type sensors with attached cable. Waterproof Main System control box with 3M self-adhesive (velcro). 1 Color display with 3M self-adhesive on the bottom of the base. 0.83" (22mm) drill bit: Precise bit to drill the exact holes for the sensors. Compatible design suitable for both imported and domestic cars