Product Description The rear thru axle by Surly - subtle and unobtrusive The is suitable for Surly thru-axle compatible frames and does not destroy the look of the beautiful frames due to the low profile. Specifications:Over Locknut Dimension:142 mm, 177 mm, 197 mmAxle Diameter:12 mmTechnical Information:Use:rear: 12 x 142 mm, 12 x 177 mm, 12 x 197 mmType:thru-axleAxle Material:aluminium (7075)Nominal Diameter:M6Thread Pitch:1.0Models:12 x 142 mm: Over Locknut Dimension:142 mmAxle Diameter:12 mmCompatibility:Midnight Special, Instigator, Legacy Karate Monkey, Legacy KrampusManufacturer Number:FS1175 12 x 177 mm: Over Locknut Dimension:177 mmAxle Diameter:12 mmCompatibility:WednesdayManufacturer Number:FS1177 12 x 197 mm: Over Locknut Dimension:197 mmAxle Diameter:12 mmCompatibility:Ice Cream Truck, Big Fat DummyManufacturer Number:FS1178Contents: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