5-BIT INTERCHANGEABLE – This screwdriver comes with interchangeable heads including a 0.6 Tri-Point, a 0.8 pentalobe, a 1.5 crosshead, a 2.5 double cross, and a T1 torx head. PROFESSIONAL USE ONLY – For high-level repair technicians who require precision. This Relife RL-723 interchangeable Torque Screwdriver Set contains a torque-restricted screwdriver. WHAT IS A TORQUE SCREWDRIVER? – The screwdriver has a torque level of 0.5kgfcm. The screwdriver will begin to click and stop tightening once the exact correct amount of tightness is achieved. WHY USE TORQUE SCREWDRIVERS? – Torque screwdrivers prevent the technician from overtightening screws when making repairs. This is required when professionally repairing todays smartphones, and other devices, and will prevent damage to other components when reassembling the phone. WHEN TO USE TORQUE – Ideally you should be using torque screwdrivers for all your repairs. Using them allows the technician to adhere to strict reassembly manuals & instructions allowing the technician to complete reassembly of devices safely and correctly., Manufacturer: Fonefunshop