采用高強度合金鋼鍛造工藝制成，經(jīng)特殊熱處理淬火。

It is made of high-strength carbon steel forging process and with heat treatment.

including:

包括：

250mm平鑿一支

300mm平鑿一支

350mm平鑿一支

250mm尖鑿一支

300mm尖鑿一支

350mm尖鑿一支

鑿子直徑18mm