2.Universal kūpono no nā mea paʻa bit maʻamau a me nā mea hana mana.
3.Reinforced tip no ka lōʻihi o ke ola ma mua o ka maʻamau bit.ribbed tip kū i ka 50% torque ma mua o ka nui.
4. ʻO ke kila kila Chrome-vanadium-molybdenum a i ʻole ke kila kila S2 mea hana ʻoihana i hoʻohālikelike ʻia i ka paʻakikī no ka hoʻonui ʻana i ka lōʻihi.
5. Heat trated e pale aku i ka hakihaki a me ka lole .Specially i hoʻolālā ʻia e hōʻemi i ka wehe ʻana.