Shimano 38T chainring for mountain bike cranksets using 104 mm BCD 4-bolt spiders.

Black aluminum chainring with shift ramps, pins, and "HG-X CHAIN ONLY" marking for use with HG-X chains.

Stamped branding and codes on the ring read "SHIMANO" and "38-24 AM".

Actual Measurements: Weight: 75 g (digital scale); Bolt Circle Diameter (BCD): 104 mm, 4-bolt pattern.