What is wd 50 spray?

As an AI language model, I am not entirely sure what you are referring to as there could be different products with the name "WD 50 spray." However, I assume you mean the WD-40 300012 Specialist Silicone Spray, which is a multi-purpose lubricant spray designed for use on several surfaces.

The WD-40 300012 Specialist Silicone Spray is a fast-drying formula that's ideal for use on rubber, metal, and plastic surfaces. It's also great for waterproofing and protecting surfaces from rust and corrosion. Additionally, the formula contains no added oils or petroleum distillates and is safe on most surfaces.

Some of the benefits of using this spray include:

1. Lubrication - The WD-40 Specialist Silicone Spray lubricates moving parts to prevent wear and tear.

2. Protection - It protects surfaces from rust and corrosion.

3. Waterproofing - It creates a water-resistant barrier to protect surfaces from water damage.

4. Versatility - It can be used on a wide range of surfaces, including rubber, plastic, and metal.

5. Fast-drying - The fast-drying formula means that it's easy to apply and use.

Always refer to the product label for specific usage instructions.