| carbon composite | 0.26 | Advocates say carbon composites are better than metal. | ||
| graphite composite | 0.26 | Some tennis rackets and golf clubs are made of graphite composites. |
| carbon composite | 0.26 | Advocates say carbon composites are better than metal. | ||
| graphite composite | 0.26 | Some tennis rackets and golf clubs are made of graphite composites. |