Name: Multi-function screwdriver quick-change partsMaterial: carbon steelHigh-quality steel is quenched and forged, suitable for punching, chamfering counterbore, and tightening screws.A variety of specifications are available, and the specifications are rich and varied to meet the drilling needs of most customers.The high-precision spiral ligament is polished smoothly and chips are removed, and the drilling efficiency is higher.The general-purpose hexagonal shank is more versatile in size, the handle diameter is 6.35mm, and the hexagonal shank is designed to hold more stable.Set Includes: 1 Half Time Drill Driver 8 Cross Bits (2 each: PH0, PH1, PH2, PH3) 8 Flathead Bits (2 each: 1/8" 3.2mm, 5/32" 4mm, 3/16" 4.8mm, 1/4" 6.3mm) 2 Countersink Bits ( 3/32" 2.4mm, 1/8" 3.2mm) 1 Allen Wrench Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.The size is purely manual measurement, there will inevitably be an error of 1-3 cm, please refer to the actual product.Due to shooting lighting and the difference of each monitor. There will be different degrees of color difference. The actual product shall prevail.