J&W DB-1ms GC Column, 30 m, 0.25 mm, 0.25 µm, 7 inch cage. This is the most common GC column format compatible with Agilent 5890, 6890, 7820, 7890, 8860, and 8890 series GC systems and all non-Agilent GC systems with a similarly sized oven.