In the meantime (twice used) the jaggedness of the tip decreased and it became meaningless. The partner is an unscathed ordinary screw although it was tight but hard. I did not hit it and I worked straight and carefully. Is not the tip too soft? I bought six books but I am disappointed.
On 2013-09-01 22:14:02
There is no particular problem at the time of brand new, but expect from the future durability.