Gaming drink clamp or freestanding base?
Choose the support that fits the furniture.

A clamp
Check the desk edge, thickness and clearance below. Cable trays and drawers can interfere with attachments.
Built-in pockets
Seat pockets and cup inserts have their own dimensions. A capacity label is not a fit measurement.
Steadi
The holder needs a 2–3.15-inch container base and a full 5.2-inch supported resting area. It does not attach to the surface.