- Harken Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable.
- Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming
- Lightweight nylon resin sideplates replace stainless steel straps found in Classic blocks.
- Densely packed glass fibers reinforce resin for strength.
- Lightweight, strong and reliable fiber-reinforced composite construction