Compatible with:ctl471，ctl671Material:PVCMatte type for a smooth touch. Low-friction, A comfortable touch during operation.Anti-glare protective film which prevents background reflections from fluorescent lighting. Anti-fouling properties, can repel dust and even oil-based marker pens.No air pockets-Uses a special silicone adhesive, so any trapped air is able to naturally escape, and prevents air pockets. No changes in adhesivity with changes in temperature, so it's very stable.Package includes: 1 x Graphite Protective Film