Shop Products at ESI Source Solutions › Frontier 60cm XT Series Columns Gen 4 Image 1 of 2 Image 2 of 2 Frontier 60cm XT Series Columns Gen 4 from $2,335.00 Use with HeatSync Column Heaters.One of the finest long-bed columns on the market. Available in original flavor plain tip or CSI versions. Type: Select Type AUR4-60075C18-XT - Aurora Frontier XT 60cm x 75um ID 1.7um C18 AUR4-60075C18-XT-5PK - Aurora Frontier XT 60cm x 75um ID 1.7um C18 5pk Quantity: Add To Cart Added! Use with HeatSync Column Heaters.One of the finest long-bed columns on the market. Available in original flavor plain tip or CSI versions. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Aurora Rapid 5cm Columns Gen 4 from $1,180.00 HeatSync Starter Pack from $3,690.00 Aurora XT Starter Packs Gen 3 from $2,800.00 Elite 15cm XT and XS Series Columns Gen 4 from $1,530.00 Aurora Ultimate 25cm Column Gen 4 from $1,415.00