Product details:

MR Truss Universal 3 Ft Round Lighting Cross Bar For Tripod Speaker Light Stands

American Terminal Universal 3 Ft lighting Cross stand bar with bolts can be attached to any tripod speaker or Light stands, and it will turn it into a lighting stand.
General Features:

• Universal 3 Ft Lighting Cross Stand Bar With Bolts
• Universal Cross Stand Bar
• Bolts attached to Bar for easy attachments and assembly
• Black Finish
• Fits 1 3/8 (35mm) speaker stands
• 1-3/16" round tube construction
• Inside attachment points are each 8" from mounting pole center
• Remaining attachment points are spaced 10"
• Includes hardware to attach lighting brackets to bar.

Warning:
Cancer and Reproductive Harm-www.P65Warnings.ca.gov