Tecnifibre Carboflex 125 Heritage Squash Racquet uses Basaltex Technology and is the original Tecnifibre Carboflex 125 model, with the same features and near identical cosmetics. Offering a unique Isomorph shaft shape to the sides of the shaft to increase stiffness in key areas. This offers additional power and control and is constructed using Basaltex Multiaxial Transmitters made from volcanic rock.