Vibrant Aluminum Line Separators 14.3mm ID HolesVibrant Performance Line Separators are manufactured from 6061 Aluminum Alloy and are perfect for separating, isolating, and securing fuel, oil, and brake lines, making it easy to mount them to the frame or firewall. Available in Anodized Black Finish only. Stepped Line Separator; 0. 5625 in. Hole 1 ID; 0. 8125 in. Hole 2 ID; Billet Aluminum; Black Anodized;