The item for sale is a brand new, aftermarket replacement genuine white sapphire scratch resistant, watch crystal Anti Reflective with black Gasket. It will fit the Seiko SKX173 SKX009 SKX007 SKX175 for 315P15HN02 models and others. This is a Top quality sapphire crystal made to exact specifications and size as the original. It will fit the following model SKX171 SKX173 SKX175 SKX007 SKX007K1 SKX007K2 SKX009 SKX009K1 SKX009K2 SKX009J . Case #s 7S26-0020, 7S26-0028, 7S26-0029 Sapphire crystal has a hardness of 9 on the mohs scale - Diamond is 10Blue AR ( anti-reflective ) coating - underside only This sapphire crystal comes with pressure resistant gasket made just like the original. This sapphire crystal is scratch proof. It will fit the watch and the watch will be waterproof. We carry many other model and sizes of sapphire crystals for other brand and they are listed in our store for you to purchase. You will receive one sapphire crystal with black gasket. ALL BUYER :PLEASE READ DESCRIPTION OF THE ITEM IS SUITABLE FOR the WATCH BEFORE MAKING the PURCHASE TO AVOID RETURN/EXCHANGE. If you re in any way dissatisfied or got the wrong item or any question with the purchase, please feel free to contact us via online messages we will response within 48 hours.We will try our best to solve it for you.We are committed to ensuring that you are completely satisfied with every transaction. and wait for our email.