* 8pc attchment: 8-10mmØ;
    10-12mmØ;12-14mmØ;
    15-17mmØ;17-20mmØ;
    20-24mmØ;25-29mmØ;
    30-32mmØ
* Hammer & shaft:
    alloy steel sanding/chrome plated
* Attchment: chrome-molybdenum steel/black finished