Manufactured from chrome vanadium steel long and short trx star spline and hex bits includes 38 and 12sq drive to 10mm hex chrome vanadium steel bit adaptors convenient high impact storage case presents bits at an angle for easy selection contents hex bits 4 5 6 7 8 10 12mm 1 each 30 75mm trx star bits t20 t25 t30 t40 t45 t50 t55 t60 1 each 30 75mm xzn spline bits m5 m6 m8 m10 m12 1 each 30 75mm drive adaptors 38sq x 10mm hex 12sq x 10mm hex