Solid plastic insulated pliers typically have handles made entirely of plastic material. These pliers are designed for electrical work and are intended to provide insulation against electric shock. The solid plastic construction ensures that there is no exposed metal in the handle area, reducing the risk of conductivity.

Key features of solid plastic insulated pliers include:

1. Plastic Handles: The handles of these pliers are made from a solid plastic material, such as PVC (polyvinyl chloride) or another suitable insulating plastic. This construction prevents the transmission of electrical current through the handles to the user's hand.

2. High Dielectric Strength: The plastic used in these pliers has a high dielectric strength, meaning it is capable of withstanding high voltage levels without breaking down or allowing electrical current to pass through.

3. Non-Conductive Material: The entire construction of the pliers, including the joint and rivet areas, is made from non-conductive materials. This helps maintain a high level of insulation throughout the tool.

4. Durable and Lightweight: Solid plastic insulated pliers are often durable and lightweight. The plastic construction provides a good balance between strength and ease of use.

5. Available in Various Types: Just like traditional insulated pliers, solid plastic insulated pliers come in various types, such as lineman's pliers, needle-nose pliers, and side-cutting pliers. The specific type you choose will depend on the requirements of your electrical work.

When using solid plastic insulated pliers, it's essential to inspect the tool regularly for any signs of damage or wear. If the plastic insulation is cracked, chipped, or compromised in any way, the pliers should be taken out of service and replaced to ensure the continued safety of the user. Always follow safety guidelines and use the appropriate tools for the specific electrical task at hand.