SPECS - US525010UV
1/2" Shank
1/2" Cut Diameter
1" Cut Length
3" Overall Length
Solid Carbide Up-Cut Spiral
Variable Helix Joinery Router Bit
USA Made IMPROVED CONTROL - Unique helix spiral geometry starts with a shallow angle at the tip for steady, controlled plunging and increases toward the shank for efficient chip evacuation. REDUCED CHATTER - Perfect for deep mortises and long tenons, eliminating vibration and producing crisp, clean cuts. FOR JOINERY MACHINES & PLUNGE ROUTERS - Compatible with PantoRouter and Multi-Router, or when using a plunge router and fence system. AMERICAN MADE QUALITY - Like all Ultra-Shear Router Bits, the Variable Helix Router Bits are made in Strongsville, Ohio.

Ultra-Shear Variable Helix Router Bits: Precision and Control for Mortise & Tenon Joinery

Take your mortise and tenon joinery to the next level with Ultra-Shear Variable Helix Joinery Router Bits. Designed for smooth plunging, chatter-free operation, and precision cuts, these bits outperform standard spirals, delivering flawless results. Works with PantoRouter, Multi-Router or a plunge router with a fence system.

The Ultra-Shear Variable Helix Advantage

Dramatically Improved Control – The unique helix geometry starts with a shallow angle at the tip for steady, controlled plunging and increases toward the shank for efficient chip evacuation.

Greatly Reduced Chatter – Perfect for deep mortises and long tenons, eliminating vibration and producing crisp, clean cuts.

Crisp Entry Points & Satin-Smooth Sidewalls – Achieve on-dimension joinery with clean, sharp edges and flawless surface finishes.

Designed for Superior Joinery Performance

Optimized Diameters – Matched to common mortise and tenon sizes for furniture construction.

Extra-Long Cut Lengths – Reach deep mortises and create through tenons with ease.

Solid Micro-Grain Carbide Construction – Engineered and precision-ground in Strongsville, Ohio, USA for exceptional durability and long tool life.

Perfect for Any Router Setup

Ideal for Joinery Machines – Compatible with PantoRouter and Multi-Router, precision joinery systems will benefit from the chatter-free operation and consistent dimensional accuracy.

Plunge Router Friendly – Even without a dedicated joinery machine, these bits deliver better feed control, superior chip evacuation, and smoother cuts when using a plunge router and fence system.

American Made Quality

Like all Ultra-Shear Router Bits, the Variable Helix Router Bit are made in Strongsville, Ohio.