Original SF-A9 40W Laser Engraver Lens 6pcs Highly Transparent Lens Anti-oil and dust Proof Easy to Install

Highly Transparent Lens: The lens is made of a highly transparent material, which minimizes the loss of laser energy when the laser light passes through the lens. This ensures high power operation of the laser., Anti-oil and dust Proof Material: The surface of the lens has been strengthened to effectively prevent oil and dust from damaging the lens., Easy to replace the worn lens, and install the new one within couple minutes., What's in the Package: 6pcs original SF-A9 laser lens.