The EZ Clutch Mic Stand with Boom from Hercules Stands features three great design innovations that eliminate the usual problems associated with the everyday mic stands. The Quik-N-EZ Adapter requires a simple push of the lever up or down to quickly mount it to the mic stand. It can be left attached to the mic clip for speedy setups. Secondly, the Quik-N-EZ Boom with Retainer allows for instant attachment of the boom to the stand. Just flip the lever up to attach and down to remove. Finally, pressing the lever on the EZ Clutch releases the clutch, letting you slide the upper tube up or down. It"s as simple as ever. Height adjustable from 41.1" to 66.1", the microphone stand has a tripod base made of durable die-cast aluminum.Quik-N-EZ Adaptor for instant microphone attachment Quik-N-EZ Boom with Retainer for instant attachment Quik-N-EZ Clutch for easy adjustments Tripod Base made of durable die-cast aluminum Manufacturer"s model number: MS531B Height adjustment from 1045-1680mm (41.1-66.1") Weight: 3.2kb (7lb.) Base radius (340mm or 13.4") Boom length: 780mm (30.7")