Eclat's Onyx Stem utilizes cold forging technology in its construction rather than CNC machining, resulting in a smooth unique shape with huge strength advantages over a traditional CNC stem. Made from 6061-T6 alloy with a cold-forged process ensuring the Onyx is strong, looks good and is affordable. With internal machining to help save weight and STC (Shark Tooth Clamping) that really bites down on the bars keeping them from slipping.