Professional Stepped Drill DIA 4 12mm 4 20mm 4 32mm HSS Spiral Groove Titanium Cone Drill

1pcs 4-12/4-20/4-32mm HSS Titanium Spiral Grooved Step Drill Bit Triangle Shank Step Cone Drills for Metal PVC Board Step Drills

came very fast.I looks so good.I ll use it for a while and lets see the performance .

Material: High Speed Steel

Use: Metal Drilling

length: As description

Model Number: 15060039001/002/003

Type: Core Drill Bit

is_customized: Yes

DIY Supplies: Metalworking

Brand Name: KEELRONL

Quantity: 1pcs

Surface: Titanium coated

Handle Shape: Triangle shank

Thickness of work-pieces/Height of step: 5mm

Diameter of handle: 6mm, 8mm, 10mm

Size of steps: 5steps/4-12mm; 9steps/4-20mm; 15steps/4-32mm

Color: As the picture shows

Material: High-speed steel 4241

Item name: Spiral Grooved Step Drill Bit

Used for: for Metal PVC Board Step Drills

Note:

3Pcs/Set 4-12mm, 4-20mm, 4-32mm Step Drills;

HSS Nitriding Black Stepped Drills: 

• Triangle Shank Straight Groove: 1pc, 3pcs 
• Hex Shank Spiral Groove: 1pc, 3pcs
• Hex Shank Straight Groove: 1pc 

1pc Best Quality ​HSS4241 6-60mm Spiral Grooved Stepped Drill Bit;

5Pcs HSS4241 Imperial Stepped Drills with Aluminum Box;

1pc HSS Hex Shank Spriral Grooved Stepped Drills

M35 HSS-Co cobalt Spiral Groove Stepped Drill for High Hardness Workpiece

 

1pcs 4-12/4-20/4-32mm HSS Titanium Spiral Grooved Step Drill Bit Triangle Shank Step Cone Drills for Metal PVC Board Step Drills

 

Features:

• 100 brand new and high quality.
• It is titanium spiral groove step drill bit.
• Unique step structure, a drill can punch out a variety aperture of holes.
• Does not need center punch to assist it, compared with ordinary hemp flower drill, it is stabler and difficult to be broken.
• It has these functions that hemp flower drill does not have, such as burrs removing, chamfering, punching elliptic hole, etc.
• It is suitable for being installed on the pistol drill and bench drill, applicable for punching on these harder workpieces, such as stainless steel, carbon steel, aluminum plate, iron plate, etc.

Notes:

• Please water it for cooling while punching so that can prolong its lifetime, rotation rate from 250 to 400 is recommended.

Specifications:

• Material: High-speed steel 4241
• Surface treatment: titanium
• Shank type: Triangle Shank
•         Shank Diameter      Step Quantity              Step Diameter

     001          6mm                      5steps                    (4 , 6 , 8 , 10 , 12 )mm

     002          8mm                      9steps                    (4, 6 , 8 , 10 , 12 , 14 , 16 , 18 , 20)mm

     003         10mm                     15steps                   (4 , 6 , 8 , 10 , 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 , 28 , 30 , 32)mm

Package Included:

• 1pc Titanium Spiral Groove Step Drill Bit

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