The LA Rag House Dog Bone Articulating Arm system — includes 2 Dog Bone Lollipops with 3/8" female threads, 2 Dog Bone 6" arms, 3 Dog Bone 3/8" T-handle knobs, and 2 3-1/2" baby pin male threads. A modular, articulating arm set for precise positioning of flags, diffusion, and accessories in tight rigs. 2" Mighty Mini Grip Head not included.