Thru-Axle for the attachment of the Topeak Zi:Rack range of rear racks. Compatible with 700c Road and Gravel bikes. Thread length: 20mm Axle length: 170mm Thread pitch: 1.0 Material Aluminum AXLE LENGTH 170 mm TP 1.0 TA2420-SP04 TL 20 mm Weight 50 ~ 60 g The total weight varies depending on the number of spacers used.
