Insulated heavy-duty diagonal cutting pliers uses 

1. Cutting Wires and Cables: The primary function of diagonal cutting pliers is to cut through wires and cables cleanly and precisely. The angled cutting edges make it easier to access and cut materials in tight spaces.
2. Electrical Work: Electricians often use insulated diagonal cutting pliers to trim and cut electrical wires during installation or repairs. The insulated handles provide protection against electric shocks, ensuring safety while working on live circuits.
3. Stripping Insulation: The sharp cutting edges of these pliers can also be used to strip insulation from wires. This is particularly useful when preparing wires for connections or terminations.
4. Crimping: Some models of diagonal cutting pliers come with crimping features, allowing users to create secure connections on electrical connectors or terminals.
5. Precision Cutting: The diagonal shape of the cutting edges allows for precise and controlled cuts, making these pliers suitable for tasks that require accuracy, such as trimming component leads on circuit boards.
6. Mechanical Repairs: These pliers can be employed in various mechanical applications, including cutting and shaping small metal components or fasteners.
7. Jewelry Making: In hobbyist and professional jewelry making, insulated diagonal cutting pliers can be used to cut and shape metal wires for creating jewelry pieces.
8. Automotive Repairs: Diagonal cutting pliers are handy in automotive repairs for cutting and manipulating wires and cables in the electrical system.
9. General DIY Tasks: These pliers can be useful in a wide range of do-it-yourself (DIY) tasks where cutting, stripping, or crimping of wires is required, especially in situations where electrical safety is a concern.
10. Telecommunications: Insulated diagonal cutting pliers are commonly used in the telecommunications industry for cutting and terminating cables.