From the manufacturer's official website:

Features:

• Not copmpatible with 9-speed system
• Super Narrow Chain for 10-speed
• Special chain connection tool(TL-CN23/CN32) is required for CN-6600
• weight:280g(116link)

Specifications:

• Type Super Narrow HG for 10-speed
• Pin Link Plate zinc-alloy plated
• Roller Link Plate gray
• Chromizing Treatment Link Pin Yes
• Average Weight 280g(116links)

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