New with universal clamps for 2007! The clamping mechanism rotates 360° to allow you to mount this rack on any vertical portion of your tower and still be straight. Racks are CNC manufactured from 6061 billet aluminum with stainless steel screws. The brushed, bright dipped anodized finish is extremely durable and won't crack or flake off. Rubber protects your boards and holds them securely. Holds 2 boards and has universal clamps to fit tower sizes from 1-5/8" to 2-1/2".