3 Pcs/set of drills HSS Titanium Coated Spiral Grooved Step Drill Bits Pagoda wood tool hand drill bits foret metaux

These spiral grooved step drills have good chip removal ability and cutting more smoothly than straight flute step drill.
Features:
Good chip removal ability.
High-speed steel, nice quality and durable for use.
These drill bits works great in making a smooth, clean and perfectly round hole.
Professional design, which makes drilling holes more precise with smoother cutting.
Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood.
This drill bit set includes 3 sizes(4-12mm, 4-20mm, 4-32mm), which meet your different needs perfectly.
Specifications:
Material: High-speed steel 4241
Surface Treatment: Titanium coated
Shank Diameter: 6.35mm (hexagon shank)
Item Weight: Approx. 215g / 7.58oz
Package Weight: Approx. 216g / 7.63oz
Package Size: Approx. 16 * 9 * 3cm / 6.30 * 3.54 * 1.18in
Package List:
3 * Step Drill Bit