Kaisi new multi-function screwdrivers set for smart phones High Quality 5pcs Set (0.8\+1.2\+1.5\T5\-2.0mm). The Handle is made of Anti-Static Aluminum Alloy. The Head Bit is made of S2-M black With magnetic. Hardness rating of H.R.C.51-56. For Apple iPhone, Samsung Galaxy S2,S3,Nexus,Blackberry,Mac Air\Pro etc.