Heavy Duty, SIngle-Brace, Single-Tier, "X"
Features:

Designed
exclusively by Quik-Lok engineers, the "Auto-Disc" is the most
innovative and simplest locking device ever made for any "X" stand

The ingenious system houses four positive-lock height positions and is completely sealed exposing no parts

The
mechanism allows the user to instantly open and close the stand from
the top tiers without having to push or pull any knobs or buttons on
the center disc

The
QL-609 & QL-610 are the ony keyboard stands available with patented
"Auto-Disc" system. Heavy duty 30 mm x 30 mm steel tubing, the
single-brace QL-609 can hold keyboards up to 180 lbs, and the QL-610 is
the strong enough to hold keyboards up to 225 lb (101 kg)

Easily expandable by adding any of the available QLX accessories