2-Hole Short Graphite Ferrules - 0.0625'' Nut x 0.5 mm ID, 10pc/PAK

Graphite/Vespel ferrules are 15% graphite and 85% polyimide. They are the best choice for glass columns and polyimide-coated, fused-silica capillary columns and can usually be removed easily from columns. Quantity: Package of 10 Column Inner Diameter: 0.32 mm Ferrule Inner Diameter: 0.5 mm