Low-friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.
The Carbo 29mm series are a significant improvement over the older bullet block series. In particular I like the reinforced plastic construction without stainless steel in some of these blocks, like the Carbo cheek. This reduces corrosion with aluminum and perhaps with carbon.