Our flexible dual function enhanced heat resistant AMPS hole / Adhesive mount that features extra-strength 3M VHB adhesive and is compatible with all auto tuner programmers utilize Single Tab and Dual Tab mounting connection. This package includes the adhesive mount base w/both 4 hole drill/screw in connection and 3M adhesive base and Single / Dual-T-Tab head. The bottom of the mount has a contour base that help adhere to slightly curved dashboards or other surfaces. To attach the mount, simply remove the red plastic from the back of the 3M VHB mounting disk, then place and press down on a previously cleaned surface. Please allow 24 hours for the adhesive to cure before securing the base of the mounting pedestal for best results