Payment & Shipping Terms:
Material of Lens: high quality & coated optical lens,used for red laser pointer and leveling instrument.
Lens Property: Aspherical Mirror
Focal Length of Lens: F=5mm
Surface Treatment: plating 610-690nm antireflective film
Do not touch the lenses and its surface with your hand directly, and do not let the lens surface touch hard object directly , so as not to scratch the surface. Usually we pick it up by using a plastic tweezers, if the lens is dirty due to our careless, the most simple and effective method is washed with water directly, and then wipe off lightly with hemp cloth.
P.S. this item is a special product, we'll make sure that the product is new and work well before we ship out the goods, once sold out can't be guaranteed and replaced.