... 2.5mm(commonly used)"*" type (4pcs) :T3. T4. T5. T6.(suit for mobile phone ,laptop,harddisk,printer ,XBOX,XBOX360,shaver etc..)type ... shell and HDD slider control part .T6 for disk axis .2 .T10 suit for XBOX .T4 T5 suit for laptop HDD .T10 is better ... ,chinese mobile phone ,some Panasonic model,T4 for some Motorola .T5 for Motorola and NOKIA ,T6 for all NOKIA mobile phone ,some samsung ,Motorola ...