1. The tape must be replaced time the screen is removed for repair or upgrade. 2. For iMac13,1 end of 2012: MD093LL/A (2.7 GHz Core i5)-iMac13,1 end of 2012: MD094LL/A (2.9 GHz Core i5)-iMac13,1 end of 2012: MD094LL/A 3.1 GHz Core i7) -iMac13,1 Early 2013: ME699LL/A (3.3 GHz Core i3); iMac14,3 End of 2013: ME086LL/A (2.7 GHz Core i5)-iMac14,3 End of 2013: ME087LL/A (2.9 GHz Core i5)-iMac14 ,3 End of 2013: ME087LL/A 3.1 GHz Core i7) 3. For iMac14,4 Mid-2014: MF883LL/A (1.4 GHz Core i5)-iMac16,1 Late 2015 version: MK142LL/A (1.6 GHz Core i5)-iMac16,2 Late 2015 version: MK442LL/A (2.8 GHz Core i5)-iMac16,2 Retina 4K end of year version: MK542LL/A LL/A (3.3 GHz Core i7) 4. Replacement part numbers: 946-4468, 946-4469, 946-4470, 946-4471, 946-4472, etc. colour: black + white Material: plastic size: 21 inch Package Contents: 1 x for A1418 Adhesive Strips Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.