Securely fix your mount to flat surfaces with the Quad Lock 360™ Base - Flat Rectangle Base, available in both 2-hole and 4-hole options. These bases can be mounted vertically, diagonally, or horizontally, offering versatile installation. Utilizing the universal AMPs hole spacing standard, they accommodate 10G or M5 countersunk fasteners. For the strongest connection, we recommend using all four screws if you choose the 4-hole base. Each base includes a 10mm spacer and two screws for connecting the spacer to a Quad Lock 360™ HEAD or ARM. Please note that screws for mounting the base to your desired surface are not included.