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🚂 Tune it right, roll it smooth — your layout’s secret weapon!
The Micro-Mark HO & On30 Truck Tuner is a precision alignment tool designed to optimize model train wheel and axle positioning. Built with durable tool-steel, it reshapes bearings to NMRA’s 60° contour, reducing friction and derailments while enhancing rolling performance. Compatible with HO and On30 scale trains, it increases locomotive pull capacity by up to 20%, making it an indispensable tool for hobbyists seeking smooth, realistic operation and long-term reliability.

| ASIN | B06XGK5QSG |
| Age Range Description | Adult |
| Best Sellers Rank | #267,041 in Automotive ( See Top 100 in Automotive ) #103 in Wheel Alignment & Balancing Tools |
| Brand Name | Micro-Mark |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (157) |
| Educational Objective | Science |
| Global Trade Identification Number | 00818305028953 |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions | 3.75 x 3 x 0.25 inches |
| Manufacturer | Scientific Models, Inc. |
| Manufacturer Part Number | 82838 |
| Material Type | Steel |
| Model Number | 82838 |
| Number of Players | 1 |
| Operation Mode | Manual |
| Size | Compact |
| Theme | Trains |
| UPC | 818305028953 |
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