# Screwdriver bit set KWB 128640 — 3 pcs, Robertson tips, 28 mm length

**URL:** https://aio.lv/en/product--kwb-128640--4588954
**Data updated:** 2026-03-29 16:05 (EEST)
**Category:** Screwdriver Bits
**Manufacturer:** KWB
**Manufacturer code:** 128640
**EAN:** 4009311286406
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kwb-128640--4588954

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

KWB 128640 screwdriver bit set comprising 3 bits with Robertson (square) tips and 28 mm length. Designed for use with manual or powered screwdrivers and bit holders, these bits suit fastening tasks in carpentry, furniture assembly and general maintenance where square-drive screws are used.

## Long description

KWB 128640 screwdriver bit set includes three 28 mm Robertson (square) bits intended for use with manual screwdrivers, power drivers and bit holders. These micro bits are engineered for small square-drive screw connections, offering a balance of compact size and reach for tasks in carpentry, furniture assembly, electrical work and maintenance of older vehicles. Manufactured from high-quality TQ 60 steel with a satin finish, the bits are mounted on a practical fastening strip and have a 4 mm hexagon shank compatible with standard bit holders.
Advantages
The set provides precise engagement with Robertson screws thanks to accurately formed square tips, reducing cam-out and slippage. The 28 mm extra length enables access to recessed or hard-to-reach fasteners while retaining control in confined spaces. TQ 60 steel construction ensures strength and wear resistance appropriate for frequent use, and the satin surface finish minimizes glare and corrosion. The 4 mm hex shank offers broad compatibility with common bit holders and drivers.
Suitable for
Carpentry and woodworking where square-drive screws are used
Furniture assembly and fittings installation
Electrical and electronic maintenance with small screw connections
Restoration and repair of vintage cars and machinery
General household maintenance and DIY tasks
Key specifications
Tip type: Robertson (square) drive
Quantity: 3 bits per set
Bit length: 28 mm (extra long for micro bits)
Material: TQ 60 steel
Shank: 4 mm hexagon
Surface: satin finish
Mounting: practical fastening strip
How to use
Select the appropriate Robertson bit from the fastening strip and insert the 4 mm hex shank into a compatible bit holder or driver chuck until it seats securely. Align the square tip with the screw recess and apply steady axial pressure while turning the driver. For power drivers, use low to medium torque settings for small screws to prevent overdriving or damaging the fastener. After use, return bits to the fastening strip for organized storage and to protect the tips.
Usage recommendations
Use with drivers or bit holders that accept a 4 mm hex shank and set torque limits on powered tools when working with small or delicate screws. Inspect tips periodically for wear and replace the bit if tip deformation or rounding is observed to maintain secure engagement with square-drive screws.

## Specifications

| Feature | Value |
|---|---|
| Length | 28 mm |
| Number of bits | 3 pc(s) |
| Screwdrivers/bits tips included | Robertson |

## FAQ

### How much does the Screwdriver bits KWB 128640 — 3 pcs Robertson 28 mm cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### 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

https://aio.lv/img/cache/product/4588954/59025434_large.webp