H World Shopping Tactical Foldable Reflex Lens Screen Protector Scope Red Dot Sight Cover 20mm QD Mount w/2 Spare Lens Black for Airsoft Hunting Shooting We ship from Hong Kong or China, 100% Brand New There are protective films on the item, to avoid the lens friction. Please remove it before you use the item. For Airsoft Only, Color :Black Material: Lens are made of a hard plastic / Mount is made of metal Weight: 65g. Very Easy to Install, Fits 20 mm rail system Includes Two Lens Covers (Yellow & Transparent). Screen dimension: 50mm(W) x 55mm(H) x 3mm(D)