---
product_id: 475800215
title: "Undercut Saw Blade, 6-1/2\" Diameter - Replacement for Crain #821 - Compatible with Crain Undercut Saw #812, #820 and #825 - Carbide Teeth"
brand: "caliastro"
price: "NT$1676"
currency: TWD
in_stock: true
reviews_count: 8
category: "Caliastro"
url: https://www.desertcart.tw/products/475800215-undercut-saw-blade-6-1-2-diameter-replacement-for-crain
store_origin: TW
region: Taiwan
---

# High heat-resistant tungsten carbide 10 ultra-durable carbide teeth 6.5-inch precision diameter Undercut Saw Blade, 6-1/2" Diameter - Replacement for Crain #821 - Compatible with Crain Undercut Saw #812, #820 and #825 - Carbide Teeth

**Brand:** caliastro
**Price:** NT$1676
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut sharp, cut smart — stay ahead with Caliastro precision!

## Quick Answers

- **What is this?** Undercut Saw Blade, 6-1/2" Diameter - Replacement for Crain #821 - Compatible with Crain Undercut Saw #812, #820 and #825 - Carbide Teeth by caliastro
- **How much does it cost?** NT$1676 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/475800215-undercut-saw-blade-6-1-2-diameter-replacement-for-crain)

## Best For

- caliastro enthusiasts

## Why This Product

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

## Key Features

- • **Precision-Cut Power:** 6.5-inch diameter blade engineered for flawless undercuts on wood and drywall.
- • **Unmatched Durability:** Tungsten carbide teeth deliver long-lasting sharpness and superior heat resistance for heavy-duty use.
- • **Compact & Lightweight:** Designed for easy handling and quick installation, boosting your jobsite efficiency.
- • **Seamless Compatibility:** Perfectly fits Crain Undercut Saws #812, #820, and #825 for effortless blade swaps.
- • **Clean, Straight Cuts Every Time:** Hardened steel body ensures smooth, professional-grade finishes without splintering.

## Overview

The Caliastro 6-1/2" Undercut Saw Blade is a premium replacement blade compatible with Crain Undercut Saws #812, #820, and #825. Featuring 10 tungsten carbide teeth on a hardened steel body, it delivers clean, precise cuts on wood doors, jambs, baseboards, and drywall. Engineered for durability and heat resistance, this compact blade enhances your toolset with professional-grade performance and effortless compatibility.

## Description

Caliastro 6-1/2-Inch Carbide Teeth Undercut Saw Blade is compatible with Crain Undercut Saw #812, #820 or #825 and is a replacement blade for Crain Super Saw Blade #821. Ideal for cutting wod door jambs, doors, wood base and drywall.

Review: thumbs up - just as advertised
Review: Excelente - Buena compra

## Features

- 6-1/2 inch undercut saw blade with 7/8" bore size
- Designed for cutting wood doors, door jambs, wood base and drywall
- Replacement blade for Crain Blade #821
- Compatible with Crain Undercut Saw #812, #820 and #825
- Made with high quality Tungsten carbide teeth which are long-lasting and have high heat resistance
- Hardened steel blade body
- Produces straight, clean cuts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B3CJZN5P |
| Best Sellers Rank | #67,624 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #161 in Circular Saw Blades |
| Brand | Caliastro |
| Brand Name | Caliastro |
| Color | Black |
| Compatible Devices | Crain Undercut Saw #812, #820, #825, Crain Blade #821 |
| Compatible Material | Engineered Wood, Plastic |
| Customer Reviews | 4.4 out of 5 stars 91 Reviews |
| Global Trade Identification Number | 00850027172118 |
| Item Dimensions L x W | 10"L x 5"W |
| Item Thickness | 10 inches |
| Item Weight | 0.34 kg |
| Manufacturer | Caliastro LLC |
| Material | Hardened Steel |
| Material Type | Hardened Steel |
| Model | Undercut Saw Blade |
| Number of Items | 1 |
| Number of Teeth | 10 |
| Part Number | C10W32T |
| Product Dimensions | 10"L x 5"W |
| Style | Compact |
| Style Name | Compact |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Caliastro
- **Color:** Black
- **Compatible Devices:** Crain Undercut Saw #812, #820, #825, Crain Blade #821
- **Item Thickness:** 10 Inches
- **Item Weight:** 0.34 Kilograms
- **Material:** Hardened Steel
- **Number of Teeth:** 10
- **Product Dimensions:** 10"L x 5"W
- **Style:** Compact
- **Unit Count:** 1.0 Count

## Images

![Undercut Saw Blade, 6-1/2" Diameter - Replacement for Crain #821 - Compatible with Crain Undercut Saw #812, #820 and #825 - Carbide Teeth - Image 1](https://m.media-amazon.com/images/I/71IUGx3csVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ thumbs up
*by S***N on July 5, 2026*

just as advertised

### ⭐⭐⭐⭐⭐ Excelente
*by A***A on September 2, 2025*

Buena compra

### ⭐⭐⭐⭐⭐ Nice
*by M***N on March 16, 2024*

So far, nothing to dislike. The cost was reasonable and the cut is smooth. In addition to the fine cut blade, I used the rip blade to saw thick hard maple. Cut like a hot knife through warm butter.

## Frequently Bought Together

- Undercut Saw Blade, 6-1/2" Diameter - Replacement for Crain #821 - Compatible with Crain Undercut Saw #812, #820 and #825 - Carbide Teeth
- Crain No. 835 Heavy-Duty Undercut Saw, Formerly Crain 825NEW
- Bon Tool Crain Blade For Undercut Saw (78-836)

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**Shop now:** [https://www.desertcart.tw/products/475800215-undercut-saw-blade-6-1-2-diameter-replacement-for-crain](https://www.desertcart.tw/products/475800215-undercut-saw-blade-6-1-2-diameter-replacement-for-crain)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-09-30*