Features: Manufacturing of S2alloy steel with a single head ten/straight air screwdriver nozzle and overall high-frequency quenching S2alloy steel material, with a hardness of up to HRC60, overall quenching treatments, hightorque, long service life, standard shankdiameter, suitable for various types of pneumatic screwdriver, electric screwdriver, charging screwdriver, etc Strong magnetic force, magnetic adsorption, with magnetic head for easy screw adsorption, making your operation easier Multiple specifications available to meet different work needs High quality plastic box packaging for convenient storage; Clear marking: The surfaces printed with specifications, making it easy to find the screwdriver drill bit in thetoolbox Wide application scope: suitable for professional maintenance personnel, computer maintenance, camera maintenance, glasses maintenance, instrument maintenance, widely used in our dailylives Specifications: Material：S2Alloy Steel Quantity：10Pcs Box Types: PA-S: PH1X50mmx3.0mm/PB-S: PH1X50mmx4.5mm/P2A-S: PH2X50mmX4.5mm/S3-Y: 3x50mm/S4-Y: 4x50mm/ S5-Y: 5x50mm /P2B-S: PH2X75mmx4.5mm/P2C-S: PH2X100mmx4.5mm/S6-Y: 6x50mm Package Includes: 1 Box Electric Magnetic Screwdriver Drill Bits Set note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement.