Lens is designed for LED use and frankly it's not suited as a replacement for that either. The heat generated form a LED source four will cause it to become misshaped. I have never used a monoprice leko so I can't speak to that.
Inferior product as a replacement for ETC LED Leko.Lens quality and photometrics are poor. Plastic is a bad idea but now I know. Im glad I bought it on sale so I didn’t waste any more money. Oh well, all education cost something.