🔧【Military-Grade Material】✓ 7075-T651 Aluminum Alloy (Aerospace Standard),✓ 30% Harder Than Steel with CNC Laser Precision Machining, ✓ Zinc-Magnesium Alloy Matrix for Extreme Load Resistance, ✓ Heat-Treated Tool Steel Wrench (Included)
🌈【Premium Anodized Finish】Triple-Layer Anodizing for Permanent Color Retention, Anti-Galvanic Corrosion Design (Compatible with All Chainring Materials), 5-Micron Surface Polish for Smooth Thread Engagement, 5 Color Options: Matte Black / Racing Red / Electric Blue/Grape Purple/Snowflake Silver
📐【Precision Sizing Guide】✔ 6.4mm Bolts: Double Chainring Applications (8-10 Speed), ✔ 4.9mm Bolts: Single Chainring Systems (1X/2X Drivetrains), ⚠ Pro Tip: Measure Existing Bolts with Calipers Before Ordering
⚙【Professional Installation】Dual-Tool System: Fixed Wrench + 5mm Allen Key, Torque Spec: 12-15Nm (Anti-Loosening Thread Design), Pre-Apply Grease on Threads for Optimal Performance
🛡【Lifetime Durability Guarantee】12-Month "Zero Rust" Promise – Free replacement if oxidation occurs, 24/7 Expert Support – US-based mechanics answer questions within 24 hours, Fast Replacement: Defective parts replaced within 48 hours
