# Drill Bit KWB 421103 3 mm Right Hand Rotation 1 pc

**URL:** https://aio.lv/en/product--kwb-421103--10738654
**Data updated:** 2026-01-05 20:34 (EET)
**Category:** Home Goods Accessories
**Manufacturer:** KWB
**Manufacturer code:** 421103
**EAN:** 4009314211030
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The KWB 421103 drill bit features a diameter of 3 mm and is designed for right hand rotation. It comes in a blister package and is ideal for precision drilling tasks.

## Long description

Drill Bit KWB 421103 is a 3 mm high-speed steel (HSS) twist drill with a 1/4" hexagon shank to ISO 1173 (E 6.3). The bit is precision ground, has a right-hand cut (rotation), a 135° tip angle and a natural (self) colour. It is supplied in a blister pack and is suitable for use with cordless drivers, drills and bit holders that accept a 1/4" hexagon drive.
Advantages
The precision-ground HSS cutting edges provide consistent hole quality and dimensional accuracy. The 1/4" hex shank ensures secure seating and quick bit changes in impact drivers and bit holders. The 135° tip angle improves centring and reduces walking on metal and hard plastics. The compact 3 mm diameter is suitable for fine, precision drilling applications.
Suitable for
Alloyed and mild steel
Cast steel and cast iron
Sintered steel
Non-ferrous metals (e.g., aluminium, copper)
Hard plastics
Key specifications
Brand: KWB
Model / MPN: 421103
Diameter: 3 mm
Shank: 1/4" hexagon (ISO 1173, E 6.3)
Cut type: Right hand
Material: HSS (high-speed steel), precision ground
Tip angle: 135°
Finish: Self colour
Packing: 1 pc blister
How to use
Insert the 1/4" hex shank firmly into the driver, drill chuck or bit holder. Use appropriate speed and feed for the material being drilled: lower speeds for hard metals and higher speeds for non-ferrous metals and plastics. Apply steady, moderate pressure and allow the drill bit to cut without excessive force. Periodically withdraw the bit to clear chips and reduce heat buildup. Use cutting fluid when drilling steels to prolong tool life and improve hole finish.
Usage recommendations
For best results when drilling alloyed or cast steels, use a suitable cutting lubricant and operate at reduced speeds. For small-diameter holes like 3 mm, maintain stable workpiece clamping to avoid runout and ensure accurate hole placement.

## Specifications

| Feature | Value |
|---|---|
| Length | 79 mm |
| Proper use | Drill |
| Package type | Blister |
| Rotating direction | Right hand rotation |
| Working length | 45 mm |
| Suitable for materials | Iron, Steel, Sheet metal, Profile, Non-ferrous metal, Hard plastic |
| Drill bit diameter | 3 mm |
| Shank shape | Hex shank |
| Point angle | 135 ° |
| Drill bit material | High-Speed Steel (HSS) |
| Precision ground cutting edges | Yes |
| Metal drill bits diameter | 3 |
| Number of drill bits | 1 pc(s) |

## FAQ

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### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All KWB products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized KWB service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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