---
product_id: 429593695
title: "John Guest 12mm Inserts (Pack of 50)"
brand: "john guest"
price: "165 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/429593695-john-guest-12mm-inserts-pack-of-50
store_origin: PL
region: Poland
---

# Precise 12mm O/D insert size Pack of 50 for bulk efficiency Compatible with hot & cold pipes John Guest 12mm Inserts (Pack of 50)

**Brand:** john guest
**Price:** 165 zł
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in leak-free confidence with John Guest Inserts!

## Quick Answers

- **What is this?** John Guest 12mm Inserts (Pack of 50) by john guest
- **How much does it cost?** 165 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/429593695-john-guest-12mm-inserts-pack-of-50)

## Best For

- john guest enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Designed for 12mm outer diameter pipes ensuring leak-proof joints every time
- • **Bulk Power Pack:** 50 inserts per pack to keep your projects flowing without interruption
- • **UK-Made Quality:** Crafted by John Guest, a trusted name in plumbing innovation
- • **Durability Boost:** Reinforces pipe ends to drastically reduce leaks and extend system lifespan
- • **Versatile Temperature Range:** Perfectly engineered for both hot and cold water applications

## Overview

John Guest 12mm Inserts (Pack of 50) are precision-engineered plastic inserts designed to reinforce 12mm semi-rigid water pipes. Manufactured in the UK, these inserts prevent leaks by strengthening pipe ends and are suitable for both hot and cold water systems, making them an essential bulk solution for professional plumbing projects.

## Description

John Guest 12mm Inserts (Pack of 50)

## Features

- Pack of 50 Inserts for 12mm O/Dia semi-rigid water pipe
- The outside diameter of the insert is 9mm
- These strengthen the end of the pipe reducing the possibility of leaking joints
- Can be used on hot or cold pipework

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | John Guest |
| Item Weight | 30 g |
| Package Dimensions | 10.2 x 6.6 x 3 cm; 30 g |
| Size | 12mm |
| Color | White |
| Material | Plastic |
| Number Of Pieces | 50 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Size:** 12mm
- **Material:** Plastic
- **Brand:** John Guest
- **Colour:** White
- **Connector type:** Insert

## Images

![John Guest 12mm Inserts (Pack of 50) - Image 1](https://m.media-amazon.com/images/I/41QsWzsJFZL.jpg)

## Frequently Bought Together

- 12mm John Guest Inserts (Pack of 50)
- John Guest 12mm Equal Elbow Push Fit Pipe Water Fitting Connector **4 Pack**
- John Guest PP Shut Off Valve Connection 12 mm (One Supplied)

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**Shop now:** [https://www.desertcart.pl/products/429593695-john-guest-12mm-inserts-pack-of-50](https://www.desertcart.pl/products/429593695-john-guest-12mm-inserts-pack-of-50)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-10*