Keystone's LED Lens Caps are designed to protect T-1 and T-1 3/4 LEDs from physical damage and electrostatic discharge (ESD), up to 16KV. These caps snap-mount easily and provide a wide 180-degree viewing angle with diffused or non-diffused LEDs. Constructed from durable polycarbonate, they are available in red, green, yellow, and clear colors, offering a cost-effective solution for various industrial applications.