Insert Form: 1/4" Hex (direct to Power Tools), Tip: PH2, PH3, SQ1, SQ2 and SQ3, OAL: 90mm(3 1/2inch), and 5PC. Packaged in Mag Charge Holder ●IMPACT BALL Torsion Technology for High Power Impact Drivers ●High wear-resistance and durable bit made by VoHA material ● Hardness 62HRC by in-house optimum heat treatment ●Hardness 62HRC by in-house optimum heat treatment ● Hardness 62HRC by in-house optimum heat treatment ●Mag Charge Holder for easy magnetizing and demagnetizing bits by friction