These little optics and holder assemblies are designed to fit the generic "Luxeon copy" power LEDs (such as our 0.5W, 1W and 3W infrared and 3W RGB devices) and any other LEDs with 6.5mm - 7.5mm diameter bodies.
These optics fit nicely over the LED and sit flush on the star PCB of the LED, leaving enough space to still solder to the LED's solder pads.
Beam angle is rated at 8 to 10 degrees.