Manufactured from chrome vanadium 6150 steel long and short ribe spline hex and security trx star bits 38 and 12sq drive to 10mm hex adaptors convenient high impact storage case presents bits at an angle for easy selection contents ribe bits m5 m6 m7 m8 m10 m12 m14 1 each 30 75mm spline bits m5 m6 m8 m10 m12 1 each 30 75mm hex bits 4 5 6 7 8 10 12mm 1 each 30 75mm security trx star bits t20h t25h t30h t40h t45h t50h t55h t60h 1 each 30 75