Pros: This is indeed the correct optic module for the Slimpar Pro VW unit. Shipment arrived rapidly. The package was adequately padded for the item it contained.

Cons: This is NOT the correct optic module for the "Slimpar Pro Rgba" as was stated in the description. Contradiction between description and part number. PLEASE FIX YOUR DESCRIPTION!!! Since they make it so hard to find, the CORRECT "Slimpar Pro Rgba" narrow optic part number (listed as an option on the box I received) is: SPPRGBALENS15 Another con: the price for this module is rather high for containing only 36 optics instead of the needed 42. The 42-optic module for the RGBA (now that I know the part number!) is available for less. However this deal would satisfy me had it been the correct part.

Overall Review: I bought this not really knowing what to expect due to the obvious contradicton between the description and the part number. I tried to search for modules for the RGBA but I could not even find the correct part number on Chauvet's website (nor in the Slimpar Pro RGBA manual), let alone any place to purchase it without having the correct part number. So this is partly Chauvet's fault :(... I would have rated it lower if not for the fact I could switch the individual optics between the modules. Undoubtedly it is the same optic, but due to the phosphor coating on the die of the warm and cool LEDs in the VW the beam winds up slightly wider. I would still come up six optics short though so I'll probably wind up having to RMA this :(... PLEASE FIX YOUR DESCRIPTION!!! Thank you!