Product Description The Gnot Boost rear thru-axle by Surly - subtle and unobtrusive The is suitable for the Gnot Boost frames from Surly and does not destroy the look of the beautiful frames due to the low profile. Specifications:Over Locknut Dimension:142 mmAxle Diameter:12 mmTechnical Information:Use:rear: 12 x 142 mmType:thru-axleAxle Material:aluminium (7075)Nominal Diameter:M6Thread Pitch:1.0Technology:Gnot Boost: The Surly Gnot Boost technology allows the mounting of different over locknut dimensions on the rear wheel. Rear wheels with 12 x 142 mm or 12 x 148 mm thru-axles can be mounted by clamping or spreading the frame. Wheels with an over locknut dimension of 135 mm can be operated in frames with Gnot Boost technology using the rear wheel axle adapter. Models:12 x 142 mm: Over Locknut Dimension:142 mmAxle Diameter:12 mmCompatibility:Karate Monkey, Krampus, Troll, Ogre, ECRManufacturer Number:FS1176Contents:1 x Manufacturer: Surly 6400 W 105th St Bloomington MN 55438 USA derby@surlybikes.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de