2. Good heat dissipation and efficient cooling and heating. 3. Lighter weight compared to a stainless steel column of comparable size. 4. Stylish and convenient guard system with simple guard replacement. 5. Optional, direct guard attachment holder 6. Appealing design. 7. Variety of custom aluminum color options. 8. Unified cylindrical body, making it convenient to apply virtually any sized labels to even the shortest column. 9. Simple and convenient packing attachments. 10. After the column is packed, the sliding disconnection of column from packer leaves perfectly cut silica bed. 11. Universal design and style for 10 mm, 20 mm, 30 mm, and 50 mm id columns. 12. Reusable hardware. 13. Patent-pending design