Product Description No ordinary thru-axle: the Lightning Bolt-On Axle from the Robert Axle Project If you're tired of your old, heavy thru-axle with its chunky lever, the Lightning Bolt-On thru-axle from the Robert Axle Project is a great solution. The Lightning Bolt-On has no lever to get stuck anywhere as well as an aerodynamic design. Thanks to a hollow space, this thru-axle is super light as well as super strong. It is subject to the tightest manufacturing tolerances and will therefore never come loose while riding. The Robert Axle Project is run by the ultimate thru-axle experts. With their help you will find the right thru-axle - for your trailer, your roller trainer or as a light tuning part for your MTB or road bike. To find out which thru-axle you need, you must first find out the dimensions of your current thru-axle. Often the length and the thread pitch are noted on the axle itself. If not, print this template from the Robert Axle Project (in original size, do not scale) to determine the relevant data. You can also use the configuration from the Robert Axle Project, which will help you find the correct axle using parameters such as bike brand and over locknut dimension. Specifications:Over Locknut Dimension:Front: 100 mm, 110 mmAxle Diameter:15 mm, 12 mmTechnical Information:Use:front: 15 x 100 mm, 15 x 110 mm, 12 x 100 mmType:thru-axleAxle Material:aluminium (7075)Features:slim profilesuper lighteasy to install and remove with 6 mm hex toolCNC precision-machinedhard anodised for robust durabilitydesigned, built and quality-tested in the USA (Bend, Oregon), used worldwideModels:Type 1: Thread Pitch:1.5 mmAxle Length:125 mmNominal Diameter:M15Use:Spare axle (front wheel 15 x 100 mm)Manufacturer Number:LIG507 Type 2: Thread Pitch:1.5 mmAxle Length:148 mmNominal Diameter:M15Use:Spare axle (front wheel 15 x 100 mm)Compatibility:RockShox forks w/ 15 x 100 mm over locknut dimensionsManufacturer Number:LIG501 Type 3: Thread Pitch:1.5 mmAxle Length:158 mmNominal Diameter:M15Use:Spare axle (front wheel 15 x 110 mm)Compatibility:RockShox forks w/ 15 x 110 mm Boost over locknut dimensionsManufacturer Number:LIG503 Type 4: Thread Pitch:1.5 mmAxle Length:133 mmNominal Diameter:M14Use:Spare axle (front wheel 15 x 100 mm)Manufacturer Number:LIG508 Type 5: Thread Pitch:1.5 mmAxle Length:138 mmNominal Diameter:M14Use:Spare axle (front wheel 15 x 100 mm)Manufacturer Number:LIG509 Type 6: Thread Pitch:1.5 mmAxle Length:145 mmNominal Diameter:M14Use:Spare axle (front wheel 15 x 100 mm)Compatibility:Fox Racing Shox forks w/ 15 x 100 mm over locknut dimensionsManufacturer Number:LIG502 Type 7: Thread Pitch:1.5 mmAxle Length:155 mmNominal Diameter:M14Use:Spare axle (front wheel 15 x 110 mm)Compatibility:Fox Racing Shox forks w/ 15 x 110 mm Boost over locknut dimensionsManufacturer Number:LIG504 Type 8: Thread Pitch:1.0 mmAxle Length:123 mm, 117 mm with spacerNominal Diameter:M12Use:Spare axle (front wheel 12 x 100 mm)Manufacturer Number:LIG506 Type 9: Thread Pitch:1.5 mmAxle Length:125 mmNominal Diameter:M12Use:Spare axle (front wheel 12 x 100 mm)Manufacturer Number:LIG505 Type 10: Thread Pitch:1.5 mmAxle Length:120 mmNominal Diameter:M12Use:Spare axle (front wheel 12 x 100 mm)Manufacturer Number:LIG511 Type 11: Use:Spare axle (front wheel 12 x 100 mm)Compatibility:FOCUS R.A.T. Systems w/ 12 x 100 mm over locknut dimensionNote:Comes with nut, which replaces the original R.A.T. nutManufacturer Number:LIG510.F Type 12: Use:Spare axle (front wheel 12 x 100 mm)Compatibility:Mavic Speed Releases with 12 x 100 mm over locknut dimensionManufacturer Number:LIG518Contents:1 x 1 x 6 mm spacers (Type 8 only)1 x nut (Type 11 only) Weight: black | type 1: 41 g black | type 2: 42 g black | type 3: 49 g black | type 4: 45 g black | type 5: 46 g black | type 6: 56 g black | type 7: 60 g black | type 8: 32 g black | type 9: 29 g black | type 10: 28 g black | type 11: 39 g Manufacturer: The Robert Axle Project 45 SW Chehalem Dr Bend OR 97702 USA info@robertaxleproject.com Distributor: MERIDA & CENTURION Germany GmbH Blumenstraße 49-51 71106 Magstadt Germany vertrieb@merida-centurion.com