9PCS Bi-metal Hole Saw Set Cutting Opener Drill Bit para sa Wood Aluminum Iron
Maikling Paglalarawan:
Gawa sa mataas na kalidad na high-speed steel (HSS)Bi-metal, heat-treated at blackened carbon steel, anti-rust at wear-resistant, high-speed steel teeth ay makakamit ang mataas na performance, mas mabilis na pagputol, at anti-corrosion.kalawang, wear resistance at mas mahabang buhay ng serbisyo.