Revo 5" Hand Grip for HDSLRs and Video Cameras (Black) Provides Stability When Shooting Video | For HDSLRs and Video Cameras 1/4"-20 Post | Mounts to Camera's Tripod Socket 1/4"-20 Socket on Bottom of Grip | Stackable or Mount as Boom Extension Durable Aluminum Alloy Construction | Knurled Finish Limited 1-year Warranty