[Pre Order - allow extra time] CAMVATE C Clamp with 1/4"-20 and 3/8"-16 Threads (Extended Length Edition) Attaches to Table Edges/Plate Glass/Etc., Supports Articulating Arms/Accessories, 1/4"-20 and 3/8"-16 Mounting Threads, 1/8 to 2.5" Clamp Range