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GeeLii Cobalt Twist Drill Bit Set Stainless Steel Metal Punch Impact Drill Bits 3.5mm 10pcs 56207

GeeLii•Drill bit

GeeLii Cobalt Twist Drill Bit Set Stainless Steel Metal Punch Impact Drill Bits 3.5mm 10pcs 56207

CN¥29.90

SKU: 100181081599

Status:In Stock (1)

ID: 100039888115

Weight: 60.00 g

Dims:96x58x10 mm

Specifications

Applicable materials: timber, Concrete
Category: Sesame Twist

Variants / Sale Attributes

Style: 3.5mm [Pack of 10]

Package Contents

Twist drill bits, pack of 10*1

Product Description

Overview

Brand: GeeLii (GEEL)
Product Type: Industrial-grade Twist Drill Bit Set
Material: Tungsten Carbide (Hard Alloy)

Sharp cutting edges with double-spiral flute design for efficient chip removal

Smooth and precise drilling with high wear resistance and durability

Fully ground and rust-resistant surface treatment to prevent chip accumulation

High hardness and corrosion resistance suitable for positioning drilling

Fire-forged high-speed steel with carbide tips for sharp and efficient cutting

Suitable for multiple materials including iron, wood, copper, aluminum, granite, marble, ceramic tiles, glass, hardwood, softwood, and plastic

Convenient storage and easy handling

Additional details

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10-piece sets available in sizes

3.0 mm, 3.2 mm, 3.5 mm, 4.0 mm, 4.2 mm, 4.5 mm, 5.0 mm, 5.2 mm, 5.5 mm, 6.0 mm

Granite/Hard Stone

Use impact function, 1000 RPM to full speed

Marble

1000 RPM to full speed, apply moderate force during drilling

Ordinary Ceramic Tile

No impact function, moderate force, 1000 RPM to full speed

Super Hard Ceramic Tile

Use ARTU tile drill, 300-500 RPM

Glass

Use liquid cooling, 300-700 RPM

Hardwood

Use hand drill or drill press, 800-1500 RPM

Softwood

Use hand drill or drill press, full speed (1500 RPM)

Plastic

Use hand drill or drill press, 1000-1500 RPM

Dedicated Grinding Stone

For re-sharpening drill bits, 800 RPM to full speed

1. Not recommended for use with lithium-ion drills below 24V due to insufficient power.

2. Use water cooling when drilling marble, glazed tiles, or stainless steel to prevent overheating and damage.

3. Avoid drilling into steel reinforcement bars in walls; change drilling location if encountered.

4. Do not drill steel plates or supports thicker than 3mm without water cooling due to high wear and heat generation.

Hand drills

Cordless drills

Drill presses

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