Detail Mata Bor Pagoda 4-20 mm 9step Multi Step Cone Tangga Payung Titanium
**Spesifikasi: Material: High-Speed Steel 4241 Surface Treatment: Titanium coated Shank Diameter: 6.35mm Steps 4-20mm: 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm) Cannot be used for stainless steel When inject cold water while working, can effectively extend the service life of the drill bit