28-in-1 T-Handle Ratchet Screwdriver Set Cr-V Magnetic Bits Multi-Function Precision Repair Tool Kit with Case

28-in-1 T-Handle Ratchet Screwdriver Set Cr-V Magnetic Bits Multi-Function Precision Repair Tool Kit with Case. Material: S2 alloy steel bits, 45# steel blade, pp handle with rubber covered. Surface treatment: chromeplate. Function: The joint is equipped with a strong magnetic field, the screwdriver rod can rotate 90 degree, and it comes with bits storage device.