Weight: 90 g Number:7 pcs Material: Metal,Plastic,PVC Compatible:for iPhone 7 and 6/6s Plus,5s,5,4s,4 2.5mm Phillips screwdriver is to open blossom core screws on logic board. 0.8mm Pentalobe screwdriver is to open star screws found on the bottom of i Phone 7. 0.6mm Y tip screwdriver is to open tri wing screws inside i Phone 7(screws securing the display cable bracket and battery connector bracket,and screws on home button bracket).Also open Tri wing screws on home button bracket) 1.5mm Cross is to open inner screws of iphone