The Kupo Lightweight Aluminum Baby Boom will support up to 6.6 lbs (3 Kg), extend to 7.8' (2.4m) and mounts in any grip head with built in "ear". Features: Black Powder Coated Finish Extends from 3.8 – 7.8' (1.1 – 2.4m) Supports 11 lbs (5 Kg) Mounting "Ear" Fits any Grip Head Built-In Hook for Counterweight Welded Baby 5/8" (16mm) Stud Specifications: