This preset torque socket (4Nm) kit will work with any mini tool containing a 5mm Allen wrench (or single 5mm Allen wrench) to apply correct torque values on component bolts for safety and to prevent damage to expensive carbon parts. A carry case neatly stores one preset 4 Nm (5Nm or 6Nm) and the 5 most popular tool bits (3/4/5mm hex & T20/T25 Torx).Hardened steel constructionHardened steel tool bits3,4,5mm Allen bits & T20, T25 torx bits includedBit carry case with mini tool strap included5.4x5x2.2cm75g