HSS Step Drill Bit 6-60mm Spiral Slotted Tapered Countersink 12 Steps For Screwdriver Drilling on Steel Brass Wood Plastic etc

Tag drill bits Size: 6-60mm (12 taps: 6,10,15,20,25,30,35,40,45,50,55,60mm). Shank diameter: 13 mm.

Drill tag Material: HSS 4241

Application: The step is suitable for workpieces with a hardness of less than 25, such as carbon steel, sheet metal, insulation boards, PVC panels, planks and wood. The workpiece thickness under 5mm.

Note: Use water cooling in drilling to extend the life of the drill bit. Recommended drill speed 250-400 RPM.

Spiral Groove Slot: 135 Point Slotted point and double flute design for self-centering and burr removal, spiral groove helps eliminate chips during drilling.

Features:

Drill pitch 6-60mm suitable for workpieces with a hardness of less than 25 , such as carbon steel, sheets, insulation boards , PVC boards, planks and wood. The thickness of the plate under 5mm

Use cooling water in the drill to extend the life of the drill bit. Recommended drill speed 250-400rpm.

Spiral Cutter Flute: 135 Double point tip and double flute for self-centering and deburring. The spiral flute helps clear chips while drilling.

Unique step design, one drill bit can be used to open holes of various sizes, means the equivalent of a drill box< /p>

High speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Multi-function, burring, chamfering, hole in expansion

Material: HSS 4241 steel

Type: Step drill

Handle type: 13mm round handle

Quantity: 1PCS</ p>

Color: Silver

Item Size: 6-60mm: 12 taps (6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm)

Package includes:

1 x 6-60mm HSS Tag Drill Bits