Trolley drill bit R32 hydraulic trolley ball tooth drill bit thread drill bit 4551T38-76T45 hole exp

Características do produto：

High hardness, corrosion resistance, long service life, impact resistance

Pontos de venda de produtos：

① Exquisite workmanship, reliable quality, high-quality materials selected, good surface gloss and concentricity.

② Corrosion and impact resistance.

③ Easy installation, standard manufacturing process, standardized dimensions, and small errors.