From the manufacturer's official website:

Forged road stem Light design for quality products. Fashionable and exclusive front design. Light alloy 6061, drop forged, heat treated T6. High precision machined. Flip-flop reversible. Available in ultra short and special 70 and 80 mm lengths.

Technical Data:

• Fork steerer O.D.: 28,6 mm (1 1/8")
• Finishing: mat black
• Weight: 178 grams (6 1/8 oz.)

For more information, please visit this product's webpage.