# Spindle adapter/extension Cometic Mercury 1/4" to 1/2"

**URL:** https://aio.lv/en/product--cometic-418124934--11785011
**Data updated:** 2026-03-08 22:56 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Cometic
**Manufacturer code:** 418124934
**EAN:** 5706071029388
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 19.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cometic-418124934--11785011

## 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 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Spindle adapter/extension Cometic Mercury for converting a 1/4" spindle to 1/2" thread. Designed to adapt tool or accessory mounting between these two common spindle sizes, it provides a straightforward mechanical interface without altering the tool. Suitable for workshop use, hand-held or stationary machines where thread conversion is required to fit bits, chucks or other attachments.

## Long description

Cometic Mercury spindle adapter/extension 1/4" to 1/2" converts a 1/4" spindle thread to a 1/2" thread, enabling mounting of larger bits, chucks or accessories on tools originally fitted with a 1/4" spindle. The adapter provides a direct mechanical connection that preserves the tool's original mounting interface while expanding compatibility with common workshop accessories. It is suitable for handheld and stationary equipment where a thread conversion is needed without modifying the tool itself.
Advantages
The adapter is built for straightforward, reliable thread conversion and maintains alignment between spindle and attachment for consistent operation. Its compact form factor and straightforward installation minimize downtime. Because it adapts existing spindles rather than requiring replacement components, it offers a practical solution for expanding tool versatility in workshop and production environments.
Suitable for
Converting 1/4" spindles to accept 1/2" bits or chucks
Workshops using a mix of handheld and bench tools
Quick adaptation of accessories for routing, drilling, sanding or grinding tasks
Temporary or occasional thread conversion when specialized tooling is not available
Key specifications
Input thread size: 1/4" (female or male depending on tool orientation)
Output thread size: 1/2" (female or male depending on adapter orientation)
Function: mechanical thread conversion/extension
Compatibility: designed for standard imperial-threaded spindles and accessories
Construction: metal alloy suitable for mechanical coupling and rotational loads
Form factor: compact extension that preserves tool accessibility and balance
How to use
Ensure the tool is powered off and disconnected from any power source before fitting the adapter. Thread the adapter onto the tool spindle or into the accessory according to the matched thread orientation, tightening by hand first then securing with appropriate tools to the manufacturer’s recommended torque if available. Mount the 1/2" accessory onto the adapter and confirm concentric alignment and secure fit before powering the tool. Check that the adapter and attachment rotate freely without wobble at low speed prior to full operation.
Usage recommendations
Use the adapter only with compatible thread sizes and accessories; avoid forced fitting of mismatched threads. Inspect the adapter regularly for wear, burrs or deformation and replace if any damage is found. Maintain safe operating speeds as specified for the accessory being used and follow the tool manufacturer’s safety guidance when converting spindle threads.

## FAQ

### How much does the Spindle adapter Cometic Mercury 1/4"→1/2" cost, and is it available for purchase?

The price is 23.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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, Bank cards on-line, Apple Pay, Google Pay. 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 Cometic 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 Cometic 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/11785011/67181125_large.webp