# Impact Socket 1" to 21 mm Square 4‑Point JCB (model JCB-4819021)

**URL:** https://aio.lv/en/product--jcb-jcb-4819021--11730195
**Data updated:** 2026-03-08 11:33 (EET)
**Category:** Screwdriver Bits
**Manufacturer:** JCB
**Manufacturer code:** JCB-4819021
**EAN:** 5905101373907
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 11.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--jcb-jcb-4819021--11730195

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

JCB impact socket, model JCB-4819021, converts a 1" drive to a 21 mm square output with a 4‑point configuration. Designed for use with impact wrenches and heavy-duty power tools, this hardened socket provides a secure fit for fasteners and torque transfer. Suitable for automotive, construction, and industrial maintenance where impact-rated accessories are required.

## Long description

JCB impact socket model JCB-4819021 converts a 1" drive to a 21 mm square output in a 4-point configuration. This hardened impact socket is designed for use with impact wrenches and heavy-duty power tools, providing a secure fit for square-headed adapters and fasteners while transferring torque reliably. The socket is built for repeated impact use in demanding environments such as automotive repair, construction sites, and industrial maintenance.
Advantages
The hardened construction resists deformation and wear under repeated impact loading, maintaining engagement with mating tools and fasteners. A precisely machined 4-point square interface ensures positive torque transfer and reduces the risk of rounding square drive interfaces. Compatibility with a 1" drive impact tool makes it a practical adapter for heavy-duty applications where larger torque and robust connections are required.
Suitable for
Automotive repair and wheel service where high torque is needed
Construction and heavy equipment maintenance
Industrial assembly and disassembly using impact tools
Workshops that require durable impact-rated adapters
Key specifications
Drive input: 1" square
Output size: 21 mm square, 4-point configuration
Material: hardened impact-grade steel
Intended use: impacts and heavy-duty torque transfer
How to use
Fit the 1" drive of your impact wrench or breaker bar into the socket's input and ensure it clicks or seats fully. Align the 21 mm square output with the mating square fastener, adapter, or retaining accessory and apply torque using short bursts when operating an impact wrench. Inspect the socket before use for cracks or excessive wear; replace if any damage is present. Use proper safety equipment, including eye and hand protection, when operating impact tools.
Usage recommendations
Use this impact socket only with impact-rated tools and accessories. Avoid using cheater bars or non-impact hand tools with this adapter to prevent unsafe loading. Store in a dry tool chest to limit corrosion and periodically clean and lightly lubricate interfaces to ensure reliable engagement.

## FAQ

### How much does the Impact Socket 1" to 21 mm JCB JCB-4819021 cost, and is it available for purchase?

The price is 13.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 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 08.07.2026 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 JCB 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 JCB 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/11730195/67110247_large.webp