---
product_id: 43425156
title: "DOUBLESTAR 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing 20mm 25mm 30mm 35mm 40mm 50mm (50mm(2.0in))"
brand: "doublestar"
price: "¥2415"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/43425156-doublestar-4-feet-i-d-polyolefin-2-1-heat-shrink
store_origin: JP
region: Japan
---

# Heat-shrinkable up to 50mm Durable polyolefin material Enhanced strain relief DOUBLESTAR 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing 20mm 25mm 30mm 35mm 40mm 50mm (50mm(2.0in))

**Brand:** doublestar
**Price:** ¥2415
**Availability:** ✅ In Stock

## Summary

> Shrink it to fit! 🔥 Your projects deserve the best.

## Quick Answers

- **What is this?** DOUBLESTAR 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing 20mm 25mm 30mm 35mm 40mm 50mm (50mm(2.0in)) by doublestar
- **How much does it cost?** ¥2415 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/43425156-doublestar-4-feet-i-d-polyolefin-2-1-heat-shrink)

## Best For

- doublestar enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Shrinks to perfectly conform to any shape, ensuring a snug fit.
- • **Aesthetic Appeal:** Sleek design enhances the visual appeal of your projects.
- • **Unmatched Durability:** Crafted from advanced polyolefins for long-lasting performance.
- • **Dependable Protection:** Provides reliable insulation and mechanical protection.
- • **Manufacturer Warranty:** Rest easy with a warranty backed by the distributor.

## Overview

The 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing is engineered for superior performance, utilizing radiation crosslinking technology to deliver exceptional heat stability and a memory effect. Available in multiple sizes, this tubing offers reliable insulation, mechanical protection, and a sleek aesthetic, making it an essential choice for professionals seeking quality and dependability.

## Description

DOUBLESTAR 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing 20mm 25mm 30mm 35mm 40mm 50mm (50mm(2.0in))

## Features

- Using radiation crosslinking polymers and processes we pioneered, our heat-shrinkable tubings are made of polyolefins, fluoropolymers and elastomers enhanced by radiation cross-linking providing a memory effect and heat-stability
- When heated during installation, our tubings shrink to conform to the shape of the substrate on wihc they are installed.
- hese provide dependable insulation, mechanical protection, and strain relief, as well as aesthetic appeal.
- Distributor to honor the Manufacturer Warranty.
- Country of manufacture: China; Material: polyolefin; Size: 50mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | DBSTAR |
| Brand | DOUBLESTAR |
| Item Weight | 3.52 ounces |
| Product Dimensions | 48 x 1.2 x 0.12 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | DBSTAR HST |

## Images

![DOUBLESTAR 4 Feet I.D Polyolefin 2:1 Heat Shrink Tubing 20mm 25mm 30mm 35mm 40mm 50mm (50mm(2.0in)) - Image 1](https://m.media-amazon.com/images/I/41XvQ73oFVL.jpg)

## Available Options

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

## Questions & Answers

**Q: What size should i order? i have a 25mm round cable to cover, should i just go for the 25mm (1in) option? not sure on the round vs flat description.**
A: I know you have probably ordered already, but for future DIYers, Always get bigger than what you are trying to cover.  This tubing has a 2:1 ratio.  This means that 25mm will possibly go over your 25 mm cable, but it will be tight.  When you try to heat it it will shrink.  It has the capacity to shrink to 12.5mm.  For a 25mm cable, I would choose 35mm tubing. It will have the capacity to shrink to 19.5mm.  It will also slip over your cable, pre-shrink, very easily and shrink down snugly.  I learned heat shrink while performing electronic maintenance in the USAF.  I wish you all luck.  Make sure you know the ratio because that can impact it's final diameter.  Pro tip: If possible, avoid lighters.  Direct flame can often burn it before it shrinks evenly.  Hair dryers are not hot enough. Love my heat gun!

**Q: I ordered 20mm. is this the size after you shrink it down? Mine measures 35mm across out of the package.**
A: 20mm is the base diameter of the tube.  Since the tube is shipped flat your 35mm measure is  about 1/2 the circumference of the tube.  The diameter calculates out to be about 22mm.  The shrink tube with a 2:1 shrink ratio will shrink from 20mm to about 10mm.

**Q: How durable is this?  I want to use it around a 1.5" diameter hose handle and I want it to hold up to hitting the ground.**
A: This is heat shrink. It will stand up to some impact but is not really flexible after shrinking. If your hose handle is subject to bending this won't last. It is designed to cover and protect electrical connections, not hose.

**Q: I need it to shrink down to  approximately 1/2" - 3/4".  What size should i order? What will be preshrunk diameter and postshrunk diameter?**
A: Since it shrinks to approximately half the original diameter, get a size that will comfortably fit over what your working on. It will shrink to fit. You can adjust how tight it fits, if that's necessary, by getting a larger starting diameter.

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**Shop now:** [https://www.desertcart.jp/products/43425156-doublestar-4-feet-i-d-polyolefin-2-1-heat-shrink](https://www.desertcart.jp/products/43425156-doublestar-4-feet-i-d-polyolefin-2-1-heat-shrink)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-12*