Based on this product's specifications, here are some alternatives and similar models
Heat shrink tube DeLOCK 19937
Summary description:
The DeLOCK 19937 heat shrink tubing is made from durable polyolefin material, offering excellent insulation and protection for wires and cables. Its transparent design allows for easy identification of the underlying components. This tubing shrinks when heated, providing a secure fit and enhancing the longevity of your electrical connections. Ideal for various applications, it ensures reliable performance in both home and professional settings.