The direct mount chainrings for SRAM cranksets replace your existing spider and chainring with one clean-looking, lightweight, and stiff piece of machined billet. Wolf Tooth patented Drop-Stop wide/narrow tooth profile for the ultimate chain retention and mud-shedding ability. Compatibility These direct mount chainrings will replace your existing chainring and spider or replace the direct mount ring on SRAM cranksets, including the DUB cranks. The ring is attached via 3 bolts on the back side of the spider near the spindle. Note that the SRAM 12spd Red and Force AXS use a different 8-bolt mounting interface that is not compatible with these chainrings. Specifications: – Boost: 3mm offset for 52mm chainline – Mount type: Direct Mount for SRAM – Offset: Boost – Chain Compatibility: Drop-Stop A tooth profile for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains