Box Concentric cable kits are among the most advanced BMX brake cables on the market, starting with custom Concentric housing that includes aramid fiber-wrapped aluminum/steel linear wires for the best combination of strength and low weight The inner Nano Cable wires are treated with a PTFE coating that reduces friction and boosts braking performance Anodized aluminum Kollars ferrules further reduce cable drag for optimal performance Each cable kit includes 79 inches of Concentric Linear housing, a black PTFE-coated Nano Cable, two color-matched and two alloy Kollars ferrules and one color-matched and one black alloy cable end caps BMX 2006mm 1.5mm Steel Chrome PTFE