SPECS - USUV-12PC | 12 Piece Master Set | Solid Carbide Up-Cut Spiral | Variable Helix Joinery Router Bits | USA Made
Variable Helix Joinery Router Bits Size Chart
| Sku | Shank | Cut Diameter | Cut Length |
| US222510UV | 1/4" | 1/4" | 1" |
|
US222515UV |
1/4" | 1/4" | 1-1/2" |
| US523110UV* | 3/8" | 5/16" | 1" |
| US523115UV* | 3/8" | 5/16" | 1-1/2" |
| US523710UV* | 3/8" | 3/8" | 1" |
| US523715UV* | 3/8" | 3/8" | 1-1/2" |
| US523720UV* | 3/8" | 3/8" | 2" |
| US525010UV | 1/2" | 1/2" | 1" |
| US525015UV | 1/2" | 1/2" | 1-1/2" |
| US525020UV | 1/2" | 1/2" | 2" |
| US525025UV | 1/2" | 1/2" | 2-1/2" |
| USUV-12PC | SET | SET | SET |
| US5375CA* | N/A | N/A | N/A |
*Requires a 1/2" x 3/8" Collet Adapter - US5375CA
Ultra-Shear Variable Helix Joinery Router Bits
Next-Level Performance for Mortise & Tenon Joinery
Take the precision of your joinery to new heights with the Ultra-Shear Variable Helix Router Bits—designed for superior control, exceptional surface finish, and unmatched performance in deep mortises and long tenons. Whether you’re using a PantoRouter, Multi-Router, or a plunge router with a fence, these bits provide the clean, consistent results discerning woodworkers demand.
Why Variable Helix Matters
Improved Control:
These bits start with a shallow helix angle at the tip for smooth, steady plunges, then gradually increase the angle toward the shank for fast, efficient chip evacuation.
Reduced Chatter:
Ideal for long tenons and deep mortises, the geometry minimizes vibration—even when cutting with material on just one side—delivering crisp entry points and satin-smooth sidewalls.
Tailored for Joinery Perfection
Joinery-Specific Diameters – Matched to common mortise and tenon sizes used in furniture construction.
Extra-Long Cut Lengths – Perfect for through tenons and deep mortises where reach and consistency matter.
Solid Micro-Grain Carbide – Precision-ground and engineered to hold its edge longer, even in tough hardwoods.
Versatile Compatibility
Use them in:
PantoRouter & Multi-Router Systems – Experience flawless results with precision joinery machines.
Plunge Routers – Combine with a fence setup for chatter-free cuts, excellent feed control, and clean finishes—no expensive machine required.
Built in the USA. Built to Perform.
Like all Ultra-Shear router bits, our Variable Helix Joinery Bits are made in our Strongsville, Ohio facility using the highest quality solid carbide and CNC grinding technology. You won’t find American-made bits of this quality at a better value.