DT Swiss XDR End Cap Kit Description: This DT Swiss XDR End Cap Kit fits DT Swiss XDR rear hubs. Works for both ratchet and 3-pawl systems. For frames with 135mm hub spacing and quick-release axles. Specifications Hub Spacing: QR x 135mm Freehub Compatibility: XDR Freehub Type: Ratchet and 3-Pawl