Features：100% and high qualityThey are manual head screwdriverApplicable for installing in electric screwdriver, hand screwdriver, electric drill and other toolsHigh biting level reduces damage to the screw head , the head of screwdriver is magneticAdopts the CR-V manufacturing skill and overall high-frequency quenching, super hardness, high torque, long lifetimeStoried in upper and lower plastic case, provides different models to choose, easy to use and carrySpecification：23 pieces:1PC ratchet wrench12PCS batch headSL3.0, SL4.0, SL5.0PH1, PH2, PZ1, PZ2, T25, T30, S1, S2, AD (tetragonal)9PCS Sleeve4MM, 5MM, 6MM, 7MM, 8MM, 9MM, 10MM, 11MM, 12MM1PC 58MM sleeve posts? TOTAL: 23PCS29 pieces:16PCS 25MM chrome vanadium steel heat treatment batch specifications:?????? Word: 4MM-5MM-6MM?????? Plum: T10-T15-T20-T25-T30?????? Cross: PH0-PH1-PH2-PH3?????? M word: PZ0-PZ1-PZ2-PZ39PCS 1/4 "carbon steel heat treatment sleeve Specifications:????? 5-6-7-8-9-10-11-12-13MM1PC 1/4 "(60MM)1PC ADP (sleeve feeder)1PC 1/4 T-type swivel1PC 1/4 ratchet screwTOTAL: 29PCS38 pieces:1PC ratchet wrench26PCS batch headSL3.0, SL4.0, SL5.0, SL6.0, SL7PH0, PH1, PH2, PH3, PZ0, PZ1, PZ2, PZ3,T10, T15, T20, T25, T27, T30, T35, T40H1.5, H2.0, H2.5, H3.0, H4.09PCS Sleeve5MM, 6MM, 7MM, 8MM, 9MM, 10MM, 11MM, 12MM, 13MM1PC 1 / 4x3 "sleeve posts1PC 1/4 conversion head cover? TOTAL: 38PCSPackage Included:1x Set of Precision Screwdriver SetNote: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!