Product Description No ordinary thru-axle: the Lightweight 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:rear: 142 mm, 148 mmAxle Diameter:12 mmTechnical Information:Use:rear: 12 x 142 mm, 12 x 148 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:1.0 mmAxle Length:158 mm, 153 mm with spacerUse:spare axle (rear 12 x 142/148 mm)Manufacturer Number:LIG617 Type 2: Thread Pitch:1.0 mmAxle Length:167 mm, 162 mm with spacerUse:spare axle (rear 12 x 142/148 mm)Manufacturer Number:LIG603 Type 3: Thread Pitch:1.0 mmAxle Length:173 mm, 168 mm with spacerUse:spare axle (rear 12 x 142/148 mm)Manufacturer Number:LIG613 Type 5: Thread Pitch:1.5 mmAxle Length:172 mmUse:spare axle (rear 12 x 148 mm)Manufacturer Number:LIG604 Type 6: Thread Pitch:1.5 mmAxle Length:178 mmUse:spare axle (rear 12 x 148 mm)Manufacturer Number:LIG614 Type 7: Thread Pitch:1.75 mmAxle Length:167 mmUse:spare axle (rear 12 x 142 mm)Manufacturer Number:LIG621 Type 8: Thread Pitch:1.75 mmAxle Length:174 mmUse:spare axle (rear 12 x 142 mm)Manufacturer Number:LIG601 Type 9: Thread Pitch:1.75 mmAxle Length:180 mmUse:spare axle (rear 12 x 148 mm)Manufacturer Number:LIG611 Type 10: Thread Pitch:1.75 mmAxle Length:198 mmUse:spare axle (rear 12 x 148 mm)Manufacturer Number:LIG610 Type 11: Use:spare axle (rear 12 x 142 mm)Compatibility:FOCUS R.A.T. Systems w/ 12 x 142 mm over locknut dimensionNote:comes with M12 x 1.5 nut, which replaces the original R.A.T. nutManufacturer Number:LIG604.F Type 12: Use:spare axle (rear 12 x 148 mm)Compatibility:FOCUS R.A.T. w/ 12 x 148 mm Boost over locknut dimensionNote:comes with M12 x 1.5 nut, which replaces the original R.A.T. nutManufacturer Number:LIG614.F Type 13: Use:spare axle (rear 12 x 142 mm)Compatibility:Mavic Speed Releases with 12 x 142 mm over locknut dimensionManufacturer Number:LIG624Contents:1 x 1 x spacer, 5 mm tapered X-12 (only type 1, type 2, type 3)1 x M12 x 1.5 nut (Type 11, Type 12 only) Weight: black | type 1: 40 g black | type 2: 42 g black | type 3: 43 g black | type 5: 38 g black | type 6: 42 g black | type 7: 42 g black | type 8: 44 g black | type 9: 45 g black | type 11: 45 g black | type 12: 42 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