3 Hole - Center Tap Base Plate, Inch, For Profile Type Double, Fastener Thread Size 1/4 In.-20, Anodized, Overall Height 2 in, Aluminum, 10 Series, Includes Fasteners No, Overall Depth 1/2 in, Overall Width 1 in, Mounting Hole Diameter 1/4 in, Required Tap Thread Size 1/4 In.-20, Fastener Mounting Type Drop In, Adjustable Yes, White, Compatible Brand and Series 80/20, 10 Series, Compatible Manufacturer Model Number 1010, 1020, Includes Tap