The Flexible Adhesive Base is suitable for mounting to flat or curved surfaces. Using a super secure 3M™ Adhesive, the Flexible Adhesive Base has 4 tabs which can be bent to match the curved surface. A 10 mm Spacers and x2 Screws (1 x M5 x 30 and 1 x M5 x 45) are supplied for connecting the spacer to a Quad Lock 360 HEAD or ARM.