---
product_id: 44827578
title: "20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine"
brand: "cncoletech"
price: "348 Lei"
currency: RON
in_stock: true
reviews_count: 9
category: "Cncoletech"
url: https://www.desertcart.ro/products/44827578-20mm-co2-laser-mirror-si-reflective-lens-gold-coated-3pcs
store_origin: RO
region: Romania
---

# 99.8% infrared reflectivity 20mm precision diameter 5-layer durable gold coating 20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine

**Brand:** cncoletech
**Price:** 348 Lei
**Availability:** ✅ In Stock

## Summary

> ✨ Reflect your laser’s true potential with gold-grade precision! ⚡

## Quick Answers

- **What is this?** 20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine by cncoletech
- **How much does it cost?** 348 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/44827578-20mm-co2-laser-mirror-si-reflective-lens-gold-coated-3pcs)

## Best For

- cncoletech enthusiasts

## Why This Product

- Trusted cncoletech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Compatibility:** Ideal replacement for K9 mirrors on K40 and other 40W laser cutters, enhancing your machine’s output instantly.
- • **Maximized Laser Efficiency:** Reflectivity up to 99.8% at 10600nm minimizes power loss, boosting cutting precision and speed.
- • **Premium Vacuum-Sealed Packaging:** Each mirror is individually packed in a closed vacuum to prevent oxidation and maintain pristine condition.
- • **Precision Engineered 20mm Diameter:** Fits perfectly for 40-400W CO2 laser machines, ensuring seamless integration and optimal performance.
- • **Ultra-Durable 5-Layer Gold Coating:** Advanced gold-plated silicon with multi-layer coating resists heat and corrosion for long-lasting reliability.

## Overview

The CNCOLETECH 20mm CO2 Laser Mirror Si Reflective Lens set features gold-plated silicon mirrors with a 5-layer coating, delivering 99.8% reflectivity at 10600nm. Designed for 40-400W CO2 laser machines, these durable, precision-engineered mirrors improve laser efficiency and longevity, packaged individually in vacuum-sealed packs to prevent corrosion.

## Description

Buy CNCOLETECH 20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine: Engraving Machines & Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Product! Works well so far! - I used these to replace the mirrors on my at-home 100W CNC Lasercutter. This machine sees a maybe 2 hours use a week, and I've had it a few years, and noticed that the existing mirrors needed to be replaced. The new mirrors were easy to install and instantly improved the consistency of cuts. I did a recalibration of the mirror angles prior to use, which doubtless helped, but the machine is working like new again. I can't vouch for the longevity of this product, I just don't know how well they'll stand up.
Review: Works great - Works great. They have been holding up just fine. I use them kn my k40 and get muxh better cutting. They are thicker then the standard k40 mirrors, but they do fit just fine.

## Features

- 〖Laser Mirror Size〗Diameter: 20mm/0.79", Thickness: 3mm/0.12", Shape: plane.
- 〖Excellent Material & Exquisite Coating Technology〗Gold-Plated silicon, 5 layers Coated gold film, Coating is durable. Superb coating art, precision slicing, polishing and grinding process, high heat resistance, adapt to work under harsh environment, long working life.
- 〖High Reflectivity〗CNCOLETECH's Si laser reflective lens has super optical performance and fast heat dissipation, high working efficiency, and minimizes light loss caused by reflection. Reflectivity to infrared light is up to 99.8% at 10600nm wavelength, minimizing power loss from the laser tube to the the worktop.
- 〖Widely Application〗Si laser mirror is suitable for 40-400W CO2 laser machines. It's great replacement laser lens to the K9 mirror for K40 and other 40W machine.
- 〖Package〗3PCS 20mm CO2 laser mirror kit. Single piece independent packaging, Adopt closed vacuum packaging to prevent oxidation and corrosion.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01DP2HV5Q |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #72,247 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #178 in Jewelry Making Engraving Machines & Tools |
| Brand | CNCOLETECH |
| Color | Gold |
| Customer Reviews | 4.6 4.6 out of 5 stars (282) |
| Date First Available | September 29, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.06 ounces |
| Item model number | 43188-284907 |
| Manufacturer | Shanghai Top Nine Industrial Co.,Ltd |
| Material | Gold-Plated Silicon |
| Number Of Pieces | 3 |
| Operation Mode | Automatic |
| Package Dimensions | 2.99 x 2.83 x 0.87 inches |
| Part Number | 43188-284907 |
| Size | Dia: 20mm ; 3PCS |
| Style | Industrial |

## Product Details

- **Brand:** CNCOLETECH
- **Color:** Gold
- **Item Weight:** 0.03 Kilograms
- **Material:** Gold-Plated Silicon
- **Style:** Industrial

## Images

![20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine - Image 1](https://m.media-amazon.com/images/I/81+52briMcL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Product! Works well so far!
*by S***L on July 21, 2020*

I used these to replace the mirrors on my at-home 100W CNC Lasercutter. This machine sees a maybe 2 hours use a week, and I've had it a few years, and noticed that the existing mirrors needed to be replaced. The new mirrors were easy to install and instantly improved the consistency of cuts. I did a recalibration of the mirror angles prior to use, which doubtless helped, but the machine is working like new again. I can't vouch for the longevity of this product, I just don't know how well they'll stand up.

### ⭐⭐⭐⭐⭐ Works great
*by X***6 on August 1, 2021*

Works great. They have been holding up just fine. I use them kn my k40 and get muxh better cutting. They are thicker then the standard k40 mirrors, but they do fit just fine.

### ⭐⭐⭐⭐⭐ Perfect fit and packaged well
*by J***M on January 22, 2025*

Mirrors were a perfect fit and came packaged very well...foam package, wrapped, and plastic protective cover over the mirrors. Cheap little upgrade over my OEM mirrors.

## Frequently Bought Together

- CNCOLETECH 20mm CO2 Laser Mirror Si Reflective Lens - Gold-coated 3PCS for Laser Machine
- CNCOLETECH CO2 Laser Lens 18mm Mirror Focus Lens PVD ZnSe FL 50.8mm / 2" for CO2 Laser Engraving Cutting Machine 30W-100W
- Cloudray 12/18mm FL50.8 & 16mm FL25.4 Laser Head With Air Assist For K40 Laser Engraver Cutter

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-15*