---
product_id: 80100102
title: "JIM-GEM® 12\" Increment Borers | 3 Thread 0.200\" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip"
brand: "jim gem"
price: "HK$5071"
currency: HKD
in_stock: true
reviews_count: 1
category: "Jim Gem"
url: https://www.desertcart.hk/products/80100102-jim-gem-12-increment-borers-3-thread-0-200-5
store_origin: HK
region: Hong Kong
---

# 12-inch core depth 0.200" (5.15mm) precision bit PTFE-coated rust & resin resistance JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip

**Brand:** jim gem
**Price:** HK$5071
**Availability:** ✅ In Stock

## Summary

> 🪓 Drill Deeper, Measure Smarter – Don’t Miss the Core of Quality!

## Quick Answers

- **What is this?** JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip by jim gem
- **How much does it cost?** HK$5071 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/80100102-jim-gem-12-increment-borers-3-thread-0-200-5)

## Best For

- jim gem enthusiasts

## Why This Product

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

## Key Features

- • **Precision 0.200" Diameter Bit:** Ideal size for detailed growth, age, and quality analysis.
- • **Deep 12" Reach for Accurate Sampling:** Extract wood cores from timber, poles, and trees with professional precision.
- • **Complete Core Extraction Kit Included:** Borer bit, handle, and stainless steel extractor for seamless wood sampling.
- • **PTFE-Coated Steel for Smooth Operation:** Reduced friction and enhanced durability against rust and resin buildup.
- • **Color-Coated Handle for Secure Grip & Visibility:** Stay in control with ergonomic design and easy tool spotting on site.

## Overview

The JIM-GEM® 12" Increment Borers feature a 0.200" (5.15mm) PTFE-coated steel bit designed for efficient wood core extraction. Its 12-inch length allows deep sampling to assess tree growth, age, and timber quality. The color-coated handle ensures a secure grip and high visibility, while the stainless steel extractor completes the kit for professional-grade wood analysis.

## Description

Extract wood cores from trees, freshly treated poles, lumber, or timber to easily determine quality, growth rate, age, tree soundness, and chemical penetration. The steel borer bit is PTFE-coated for reduced friction as well as protection against rust and resin. Back threading allows for easy backing out of wood. The reinforced borer handle is color-coated for added visibility, protection, and a secure grip. The core extractor is constructed of stainless steel. Includes borer bit, handle, and extractor.

Review: Working as expected - Used it four times now, it's doing the job. Doesn't seem to have any weak points yet.

## Features

- Extract Wood Cores
- The Steel Borer Bit is PTFE-Coated
- Color-Coated Handle For Added Visibility
- Includes Borer Bit, Handle, and Extractor
- 12Inch Bit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007BDQHMY |
| Best Sellers Rank | #426,238 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #60 in Soldering Insertion-Extraction Tools |
| Brand | Jim Gem |
| Customer Reviews | 5.0 5.0 out of 5 stars (3) |
| Cutting Angle String | 6E+1 Degrees |
| Cutting Diameter | 5.15 Millimeters |
| Date First Available | February 20, 2012 |
| Finish | PTFE |
| Finish Type | PTFE |
| Item Weight | 1 pounds |
| Manufacturer | Jim Gem |
| Material | Alloy Steel, Stainless Steel |
| Number of Flutes | 1 |
| Part Number | 63083 |
| Shank Type | Straight |
| Size | 12 Inch |
| Surface Recommendation | Wood |
| Tool Flute Type | Straight |
| Unit Count | 1 Count |

## Product Details

- **Cutting Angle String:** 6E+1 Degrees
- **Cutting Diameter:** 5.15 Millimeters
- **Finish Type:** PTFE
- **Material:** Alloy Steel, Stainless Steel
- **Shank Type:** Straight

## Images

![JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip - Image 1](https://m.media-amazon.com/images/I/31pNPGrU5EL.jpg)
![JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip - Image 2](https://m.media-amazon.com/images/I/41AKZUY3Z8L.jpg)
![JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip - Image 3](https://m.media-amazon.com/images/I/51RVjrTbWWL.jpg)
![JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip - Image 4](https://m.media-amazon.com/images/I/51vOvY6H0cL.jpg)
![JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip - Image 5](https://m.media-amazon.com/images/I/612c5WkwrgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Working as expected
*by S***H on December 29, 2020*

Used it four times now, it's doing the job. Doesn't seem to have any weak points yet.

## Frequently Bought Together

- JIM-GEM® 12" Increment Borers | 3 Thread 0.200" (5.15mm) | to Extract Wood Cores | PTFE-coated | Stainless Steel | Secure Grip
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- JIM-GEM KBC Planting Bar | Heavy-Duty Alloy Steel Tree Planting Tool for Rocky, Difficult Soil | 39" Long | Blade 4 x 12 Inches | Durable | Reinforced Foot Step

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**Shop now:** [https://www.desertcart.hk/products/80100102-jim-gem-12-increment-borers-3-thread-0-200-5](https://www.desertcart.hk/products/80100102-jim-gem-12-increment-borers-3-thread-0-200-5)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-08*