This laser mast friction disc is 100% class legal. We wanted to manufacture something modern and faster after 20 years of Teflon discs were introduced to the market. We are using top of the line copolyester with 20% Carbon fibre mixed in. This results into slick abrasive resistant material. Manufactured to ILCA 7, 6 and 4.7 class rules. 3D printed and made in Finland. Package includes 3 discs.