The MC 125 professional studio boom stand's larger diameter base and locking, rollerblade style wheels provide a low center of gravity and extra stability. Smoothly raise or lower height from 52" to 83" with a reliable clutch. The long boom telescopes from 35" to 61" and features a friction free clutch arm extension. Also includes a unique, easy adjust 5.75 lb. counterweight for a stable microphone placement. And the threaded shaft and boom sections provide quick set up and tear down for easy transport and storage. The MC 125 is in a class all its own.MC 125 Product Breakdown: Heavy Cast Base with Rollerblade style Wheels Adjustable Counter Weight Height and Length Adjustable100% Field Serviceable Parts. Rollerblade style caster wheels for super smooth movement in all directions but lock in both rotating direction for zero movement when desired. The MC 125 features a 5.75 lb. die cast counterweight that is easy to adjust for just the right placement. The MC 125 has been called the "most adjustable studio boom on the market." It ranges in height from 52" to 83" and the boom can extend from 35" to 61" to meet any studio's needs with perfect placement every time..