Spank Hex Rear Hub Adapter Adapters for the New Spank HEX Drive Rear Hubs.Features12x142/148/157 Adapter -Adapts HEX J-Type 135/142 and Gravel Rear Hubs to 12x142mm.Adapts HEX J-Type R150/157 Rear Hubs to 12x157mm.Also compatible as replacement adapters for HEX J-Type and... $29.99 $14.59 - $36.99