Rennen Threaded Decimal Chainring-4-Bolt Gear Size:43.7T The Profile Nova stem is

The Profile Nova stem is for use with a 31

MATERIAL: Internally Butted & Fully Heat Treated chromoly

Titanium bolts hold it together without added weight

bridge cable

Rennen Threaded Decimal Chainring-4-Bolt Gear Size:43.7T The Profile Nova stem isContinuing with Rennen's tradition for engineering the best racing components, the Rennen Threaded Decimal Chainring 4 Bolt allows you to better dial in the gearing you need for the track you are facing that day. Like all of Rennen's components, the Rennen Threaded Decimal Chainring 4 Bolt is manufactured from 7075 T6 Aluminum for superior durability combined with unprecedented weight reduction. SPECIFICATION MATERIAL: U. S. A. Made 7000 Series