THL VHH400 Bottom V Groove Insert for Fiber Holding Blocks, Ø350 µm Ø450 µm Coating product series_coring kit base Purchase this item and receive Purchase this item and receive a FREE P5000i Digital Analysis Microscope added to your cart upon checkout and lightweight Two Required: One Each for Left and Right Holding Blocks Compatible Fiber Buffer Coating Diameters Item # Nominal Diameter Minimum Diameter Maximum Diameter THL VHH100 100 µm 90 µm 110 µm THL VHH125 125 µm 113 µm 137 µm THL VHH160 160 µm 144 µm 176 µm THL VHH250 250 µm 225 µm 275 µm THL VHH300 300 µm 250 µm 350 µm THL VHH400 400 µm 350 µm 450 µm THL VHH500 500 µm 450 µm 550 µm THL VHH600 600 µm 540 µm 660 µm THL VHH900S 900 µm 810 µm 990 µm