From manufacturer's official website:

The tube of the Record™ seat post is made of 90°-braided carbon fibre. The top clamp is in composite material to reduce weight. The head is in light alloy and has a special groove that enables the seat to be angled perfectly.

Composite tube - clamp for seat tube - knurling pitch: 0.5 mm - composite upper clamp

Nominal weight: 185 g.

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