27th Jun 2026, 05:03 PM
21 Tooth Roller Chain Sprocket B Type Hardened Teeth, 25 Chain Sigle Strand 1 /4-Inch Pitch, 12mm Bore Black Oxide C45 Carbon Steel with Fasten Screws for 04C Chain
Price may vary by location, shipping cost, and availability.
Lowest in last 2 years
85% Off
$7.97
$52.99
Highest: $10.87
Average: $8.12
Lowest: $7.97
Lowest Offer: $7.57
Price History Graph
Offer Price Prices
Lowest: -
Average: -
Highest: -
Price History Information
You can check the price history of 21 Tooth Roller Chain Sprocket B Type Hardened Teeth, 25 Chain Sigle Strand 1 /4-Inch Pitch, 12mm Bore Black Oxide C45 Carbon Steel with Fasten Screws for 04C Chain here. This product's current Price in USA is $7.97 and the lowest final price is $7.57. The average and highest prices are $8.12 and $10.87 respectively.
| Lowest Ever Offer Price | $7.57 |
|---|---|
| 20th Feb 2026 | |
| Lowest Ever Price | $7.97 |
| 6th Jan 2024 | |
| Average Price | $8.12 |
| Based on 1016 days price tracking | |
| Highest Price | $10.87 |
| 16th Jun 2025 | |
Price History of All Variants of 21 Tooth Roller Chain Sprocket B Type...
Current Price in USA
| Price | $7.97 |
|---|---|
| MRP | $52.99 |
| Savings | $45.02 |
| Discount | 84.95% |
Recent Price Drops on 21 Tooth Roller Chain Sprocket B Type Hardened Teeth, 25 Chain Sigle Strand 1 /4-Inch Pitch, 12mm Bore Black Oxide C45 Carbon Steel with Fasten Screws for 04C Chain
Price Drop 2nd Aug 2025
$10.87 → $7.97
26.68% drop
Price Drop 5th Jan 2024
$8.39 → $7.97
5.01% drop
Price Drop 2nd Nov 2023
$10.49 → $8.39
20.02% drop
Product Information
Details
| Product Name | 21 Tooth Roller Chain Sprocket B Type Hardened Teeth, 25 Chain Sigle Strand 1 /4-Inch Pitch, 12mm Bore Black Oxide C45 Carbon Steel with Fasten Screws for 04C Chain |
|---|---|
| Store Product Code | B0C713D4BX |
| Store Name | amazon.com |
| Rating | 8.6 / 10 |
| Category | Roller Chain Sprockets |
| Product Manufacturer | FOCMKEAS |
| Model Number | 21T/12mm Bore |
Features
- Size&Package1/4" pitch, 21 teeth, 12mm round bore, more size refer to pics. Package include:1 x Chain Sprocket, 2 x Set Screws.
- MaterialMade by c45 carbon steel, the tooth part high frequency quenching heat treatment, high hardness, wear resistance, long service life, easy to use. Fully black oxide coated, corrosion resistance.
- FeatureSingle strand sprocket with one set of teeth around the circumference for applications where a single chain can support the torque and load.
- Type BType B sprocket with a hub project on one side to accommodate various types of bushings to help prevent sprocket from slipping on the shaft.
- ApplicationWidely used in various industrial scenarios, suitable for power transmission in harsh environments.such as milling machine, drilling machine or other machinery transmission occasions.
Images
× ![]()
Rating and Reviews
8.6 Based on 43 reviews
21 Tooth Roller Chain Sprocket B Type has 8.6 rating out of 10. This average rating is consist of 43 individual ratings. You can rate this product at product review page.
* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.