The Karam ES-51 Helmet Mounted Clear Face Shield appears to be a protective face shield designed for use with a helmet. Here are some general interpretations of the information you provided:

1. Material: The face shield is made of high-impact-resistant polycarbonate. Polycarbonate is a durable and lightweight material known for its high impact resistance.

2. Size: The dimensions of the face shield are given as 203.2mm x 393.7mm. This suggests that the face shield has a rectangular shape with a width of 203.2mm and a height of 393.7mm.

3. Mounting: It's mentioned as a helmet-mounted face shield, which implies that it is designed to attach to a compatible helmet. The mounting mechanism can vary, but it is likely designed for easy attachment and removal.

4. Purpose: Face shields are commonly used as personal protective equipment (PPE) in various industries to protect the face from potential hazards such as impact, chemicals, or flying debris.

For the most accurate and up-to-date information, I recommend checking the official product documentation provided by Karam or contacting the manufacturer directly. You can also look for customer reviews or contact authorized distributors for additional details on the product's features and specifications