---
product_id: 5391121
title: "KB4-R"
brand: "olfa"
price: "HK$217"
currency: HKD
in_stock: null
reviews_count: 8
url: https://www.desertcart.hk/products/5391121-kb4-r
store_origin: HK
region: Hong Kong
---

# 8mm razor-sharp curved blades 5 heavy-duty replacement blades Fits most 8mm art knives KB4-R

**Brand:** olfa
**Price:** HK$217
**Availability:** ❌ Out of Stock

## Summary

> 🔪 Slice through your creative limits with OLFA’s precision curved blades!

## Quick Answers

- **What is this?** KB4-R by olfa
- **How much does it cost?** HK$217 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/5391121-kb4-r)

## Best For

- olfa enthusiasts

## Why This Product

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

## Key Features

- • **Craft Like a Pro:** Perfect for wood, paper, vinyl, foam, and more—your all-in-one creative edge.
- • **Trusted OLFA Quality:** Inventor of the snap-off knife, setting the gold standard in durability and performance.
- • **Versatile Compatibility:** Seamlessly fits most 8mm art knives, optimized for OLFA AK-4.
- • **Long-Lasting Edge Retention:** Work uninterrupted with blades engineered to stay sharp longer.
- • **Unmatched Precision Cutting:** Carbon tool steel blades deliver razor-sharp accuracy for flawless carving.

## Overview

The OLFA 8mm Curved Carving Art Blade Set includes 5 high-quality carbon steel replacement blades designed for precision cutting and carving. Compatible with most 8mm art knives, these durable blades maintain sharpness for extended use, making them ideal for detailed work on wood, paper, vinyl, foam, and more. Backed by OLFA’s legacy of cutting excellence, this set ensures professional-grade performance for hobbyists and artists alike.

## Description

Full description not available

## Features

- RAZOR SHARP CURVED BLADES - Our 8mm replacement blades are made from high quality carbon tool steel for unparalleled sharpness and superior edge retention. The long lasting precision of these blades allows you to work longer uninterrupted.
- CONTAINS 5 HEAVY DUTY BLADES - Each refill pack contains 5 replacement hobby blades. Keep the OLFA KB4-R/5 Curved Carving Art Blade stocked and ready for all of your crafting needs.
- COMPATIBLE WITH 8mm ART KNIVES - OLFA's Curved Carving Art Blades are compatible with most 8mm art knives. However, they perform best when equipped with an OLFA AK-4 Art Knife.
- PRECISE CUTTING & CARVING - These professional replacement art blades provide accurate and reliable performance for delicate cutting needs. They're perfect for wood, paper, vinyl, rubber, models, cardstock, foam, and more.
- THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA Art Knife with OLFA Art Blades will provide optimal results.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OLFA |
| Color | Gray |
| Item Length | 14 Centimeters |
| Handle Material | Rubber |
| Blade Material | Carbon Steel |
| Manufacturer | World Kitchen - Home Improvement |
| UPC | 091511500912 |
| Global Trade Identification Number | 00091511500912 |
| Part Number | KB4R5 |
| Item Weight | 0.317 ounces |
| Item model number | 9165 |
| Item Package Quantity | 1 |
| Number of Handles | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** OLFA
- **Color:** Gray
- **Item Length:** 14 Centimeters
- **Handle Material:** Rubber
- **Blade Material:** Carbon Steel
- **Manufacturer:** World Kitchen - Home Improvement
- **UPC:** 091511500912
- **Global Trade Identification Number:** 00091511500912

## Images

![KB4-R - Image 1](https://m.media-amazon.com/images/I/41iyTZ4Y56L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Now that I know this can be re-sharpened, I think I will use it a lot more.
*by C***N on November 1, 2016*

My favorite blade! Just one problem, they are $$$. Guess what? It is possible to re-sharpen these to (better than original) razor sharp! I used only the (older ver. finer than newer ver.) pink very fine stone from a Lansky sharpener, with the 17° angle. It is tricky to get the blade clamped so that it sticks out enough that the stone will not hit the clamp (may need to use shims to secure in Lansky's holder). But very little force is required to sharpen. In fact, as little as possible (to avoid bending the blade and messing up the angle). One you get it in position, and clamp it real tight, a total of about 10-20 very light strokes w/ oil alternating each side and making sure to cover the whole edge will get it sharp enough to make hairs from your arm simply pop off and flee for their lives. I did this to a blade that had been used to scrape glue off the rough surface of broken ceramic, so it was severely dulled. But it came back to good as or better than new!Now that I know this can be re-sharpened, I think I will use it a lot more.

### ⭐⭐⭐⭐⭐ Wonderful
*by A***H on May 25, 2023*

This blade was very sharp, and just what I needed.

### ⭐⭐⭐⭐⭐ Curved Cutting Surface
*by T***. on May 30, 2024*

I really like using a curved blade. Using a straight blade means you only have one cutting surface to use. When that part is dull, you must replace the whole blade - what a waste! It does take a little extra effort to rock the blade as you cut, but they will last a LOT longer. I know it's not like saving money on a new car, but every penny saved is, well, next to worthless. But hey, it's the thought that counts, right?Try them once, I'll bet you don't go back!

## Frequently Bought Together

- OLFA 8mm Curved Carving Art Blade Set, 5 Blades (KB4-R/5) - Precision Hobby Craft Knife Replacement Curved Blade Kit for Carving, Cutting, Sculpting, Fits Most 8mm Art Knives
- OLFA Graphic Art Knife Set (AK-4) - Precision Hobby Craft Knife Kit (1 Knife & 4 Blades) w/Cushioned Grip, Replacement Blades: OLFA KB, KB4-F/5, KB4-NS/3, KB4-R/5, KB4-S/5, KB4-WS/3 Art Blades
- OLFA 8mm Chisel Art Knife Blade Set, 5 Blades (KB4-F/5) - Precision Hobby Craft Knife Replacement Chisel Blade Kit for Plastic, Wood, Film, Fits Most 8mm Art Knives

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**Shop now:** [https://www.desertcart.hk/products/5391121-kb4-r](https://www.desertcart.hk/products/5391121-kb4-r)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-08*