ANiceSeller Tempered Glass Screen Protector for Samsung Galaxy Tab 4 SM-T230NU T237 Nook 7.0'' Easy installation and easy removal, bubble free. Precise design, perfectly matches your 7.0 inch Samsung Galaxy Tab 4 SM-T230NU T237 Nook. Multi-layer, shatter-proof tempered glass construction, excellent work performance and durable. Light Penetration Ratio 93.7% (Comparison: Glasses 92%, General protective film 80%). Strong adhesive that can make installation easy and attach the film firmly so as to not affect the touch screen's sensitivity. Ultra slim thickness, anti-fingerprint and oleophobic coated, light penetration ratio 93.7% (Comparison: Glasses 92%, General protective film 80%).