General:
• Length, extended, bracket to bracket, bracket surfaces parallel: 12-1/8"
• Length, collapsed, bracket to bracket, bracket surfaces parallel: 7-11/16"

Bracket, 4 hole:
• Width, side to side across tube: 3"
• Length: 2"
• Hole diameters: cleared for #10 fasteners
• Slot length: ~7/16"
• Center to center, along length, maximum and minimum: 1-3/8", 1-1/16"
• Center to center, side to side across tube: ~2-1/8"

Bracket, 2 hole:
• Width, overall: 1-1/8" (not including rivet heads)
• Width, mounting surface: 3/4"
• Length: 2"
• Hole diameters: cleared for #10 Fasteners
• Center to center: 13/16"

Fasteners (you may need to source others depending on application):
• (4) #10 x 5/8" self tapping screws
• (2) #10 x 1-3/8" self tapping screws

Each boat and application will require different considerations based on required travel and offset dimensions. Dry fit the new support arm(s) in the extended and collapsed positions and verify no geometry issues before drilling for the final installation.