CMT Double-Bearing Downcut Spiral Flush Trim Router Bit - 1/4" Diameter, 1" Cut, 1/4" Shank

Crafted from a custom-formulated micrograin carbide, CMT Spiral Flush Trim Bits are exceptionally hard and built to last. Their advanced structure makes them stronger and more resistant to wear and breakage than typical bits.

Combined with a spiral cutting angle, CMT Solid Carbide Spiral Flush Bits are equipped with a double bearing, allowing cabinet makers to shear wood cleanly, providing more efficient chip ejection than standard flush trim bits. In production settings, this means that bits will run cooler, stay sharper, last longer, and increase shop productivity.

Why CMT Router Bits?

• Multi-Axis Grinding: Each cutting edge is ground to micron-level accuracy, producing a razor-sharp edge and a true mirror finish. The result is cleaner cuts, less tear-out, and significantly longer edge life, even in dense hardwoods.
• Anti-Kickback Design: Engineered cutting geometry controls chip load and limits how aggressively the bit engages the material. This improves operator control and reduces the risk of kickback.
• Hi-Density Industrial Chrome Carbide: Hot Isostatic Pressing eliminates microscopic voids in the carbide, creating a denser, more uniform cutting edge that resists chipping and holds sharpness longer.
• Tri-Metal Brazing: A Silver–Copper–Silver brazing system creates a stronger bond between carbide and steel while absorbing cutting vibration. This protects the cutting edge and improves performance in hardwoods and composite materials.
• Non-Stick Orange Shield Coating: Reduces heat and pitch buildup, resists corrosion, and keeps the bit cutting freely for longer service life.
• Superior High-Strength Steel: Manufactured from premium Swiss-sourced steel bar stock for superior balance, fatigue resistance, and vibration control at high RPMs.