The RPS Studio RS-3100 LightBar with Four 1/4-20 Screw Thread Post accepts up to 4 speedlites and, if desired, wireless releases, LED lights or quartz lights. Each post can be individually adjusted sideways along the sliding bar and then tightened down for proper positioning of accessories. The metal constructed bracket features a tilting umbrella holder which has a saw-tooth tilt feature for secure positioning of the bar. This bracket readily attaches to a 3/8" or 5/8" light stand. It can also be attached to a tripod via an included reversible spigot with 1/4-20 or 3/8" female threads.