SRAM Rise/Rail/Roam-Series Axle Conversion.
Features
For SRAM Rise-40/60, Roam-50/60 and Rail-50 mountain wheels
Rise-40 conversions require separate tool (use part #GS-4593), where Rise-60 conversions are a tool-free design
OS-Q/R (31mm diameter cap) conversion is only to be used with RockShox forks due to inside dropout compatibility