ethirteen DRS Alloy, 2-Ring Chain Retention System

  • 32-36t, ISCG or BB-mount, Black

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ISCG-05 - Is not compatible with an adapter - only fits ISCG'05 tabbed frames.

ISCG or BB Mount - Will fit either ISCG tabbed frames or BB-mount applications
Mounts to ISCG frames via BB-mount only
Backplate is not drilled to mount directly to ISCG tabs