I-HSS Spiral Groove 4-12,4-20,4-32mm Step Drill For Metal working
I-1.Spiral Groove Design yenza ukususwa kwe-chip ngokushesha.
I-2.Ifanele izimbobo zokubhoboza ezintweni ezihlukahlukene: ngaphakathi kwe-3mm / 0.12 intshi (I-Iron Plate, i-Copper Plate, i-Aluminium Plate); ngaphakathi kwe-intshi engu-5mm/0.2 (Ukhuni, ishidi le-PVC, Amabhodi Okushisisa).
Bhala umyalezo wakho lapha futhi usithumelele wona