Description Robert Axle’s Rear Lightning Bolt-On Axle LIG603.N – Naild Bikes 12 x 142 are a high quality, lower profile, simpler alternative. Includes a threaded M12x1.0 replacement nut, to replace the NAILD nut that came on your bike. This axle is designed for Argon18 and Marin bikes with 12×142 hubs and NAILD thru axles. After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Robert Axle Lightning Bolt-On thru axles offer the highest quality, simple, lightweight alternative to that bulky handle. Rear Lightning Bolt-On Axle LIG603.N – Naild Bikes 12 x 142 features: Be free. No longer are you constrained by the proprietary NAILD axle. Simply replace the NAILD nut with our threaded nut and thru axle. A complete solution for a standard threaded axle for your bike. Lightning is Better. Robert Axle’s front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile and lighter weight option to replace your stock thru-axles. Low Profile. No more bulky handles to strike trail obstacles. Aerodynamic design. Light Weight. Our axles are internally bored to remove unnecessary material without compromising strength. Better Tolerances. Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding. This is NOT an axle for attaching trailers or trainers. LIG603.N Specs: This axle is designed specifically to replace the NAILD axle system found on some Marin and Polygon bikes with 12×142 hub spacing. The axle includes our threaded replacement nut for the NAILD system. Axle Weight: 42 grams The axle is precision CNC machined in the USA from 7075 aluminium and hard anodized for rugged durability. Our axles are built to the tightest standards in the industry. No special tools required. Design allows for installation or wheel removal using your standard 6mm hex wrench. Designed, built and quality tested in the USA. Proven around the world. Not sure how this axle system works? We can help! We stock these axle’s in our Bicycle Repair Shop in Richmond & can help you figure out what you need.