On-Stage SB96+ Studio Boom with 7" Extension and Casters2 Straight boom shafts adjust from 43 79" with 7" mini boom extension. Height adj: 45 76". Folding legs with locking casters. This stand includes nearly everything you need for starting a studio project. At its core is a telescoping vertical shaft and an extra long telescoping boom with a solid steel counterweight. The 40 teeth boom clutch means non slip locking power. Added to the end of the boom is a Posi Lokmini boom arm. The four locking folding