Securely fix your mount to flat surfaces using one of the Rectangle Flat Hole Bases. Choose between a 2 hole or a 4 hole base. Both bases can be fixed to flat surfaces vertically, diagonally or horizontally. Each base uses the universal AMPs hole spacing standard & the holes will accept 10G or M5 countersunk fasteners. If using the 4 hole base, we recommend using all 4 hole screws for the strongest connection. A 10mm Spacers & x 2 screws are supplied for connecting the spacer to a Quad Lock 360 HEAD or ARM. Please Note: Screws are not provided for mounting the base to your required surface Both Rectangle Bases are built with tough, nylon & use the universal AMPs hole spacing standard. The holes will accept 10G or M5 countersunk fasteners. * 58mm (2.3") long x 50mm (2") wide x 14mm (0.55") high * AMPS Hole Pitch: 38mm (1.5") x 30mm (1.2") Included: * 1 x Flat Rectangle 4 Hole Base * 1 x 10mm Spacers * 1 x M5x 30 Screw (for connecting Spacer to Lever Head or 360 Arm) * 1 x M5x 45 Sc...