3Pcs HSS 4241 4-39mm Titanium Spiral Grooved Step Drills Cutter Wood Cone Drills
3Pcs HSS 4241 4-39mm Titanium Spiral Grooved Metal Shank Step Drill Hole Cutter Wood Cone Drill Saw Power Tool
100% brand new and high quality
Material: High speed steel 4241, Titanium coated.
Use: Wood Drilling
DIY supplies: Woodworking
Model Number: Hex HSS Spiral Grooved Step Drill
Type: Spiral Grooved Step Drill
Drop forged, heat treated, high-speed steel, fully polish
Take the guesswork out of drilling by delivering the right depth for you
Color: Golden (as shown)
Quantity: 3 Pcs
4-12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)
4-20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)
4-32mm 15 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)
length:4-12mm 7cm,4-20mm 7.5cm,4-32mm 10cm
The hardness of the workpiece below, the use of below 25 ��, such as iron, aluminum, PVC board, insulation board, wood, paper 5mm thickness.
When the edge of the edge of the drill bit cool down (you can add cold water, add cold oil, blowing compressed air), can effectively extend the service life of the drill bit, drill recommended speed 250-400 rpm.
There is 1 ~ 2cm error because munual measurement Posted by horizontal.
3 Pcs Hex HSS Spiral Grooved Step Drill Set