The CMT 812.660.11 Straight Bit Long Series is a professional-grade 16mm diameter router bit engineered for deep straight cuts, dadoes, grooves, and panel joinery in a wide range of materials. Built with micrograin carbide cutters mounted on a 1/2" shank, this long-series straight bit delivers precise, smooth results whether used in a handheld router, router table, or CNC routing machine. The extended 1 1/4" cutting height makes it especially well suited for through-cuts and deep channel work that shorter-series bits simply cannot reach. With right-hand rotation, 2 flutes, and CMT's signature orange non-stick PTFE coating, this bit is designed to perform consistently even under heavy production demands.

Key Features

• Micrograin Carbide Cutters on Fatigue Proof Steel Bodies - the combination of special fatigue proof steel and micrograin carbide means the bit absorbs stress during heavy routing passes without chipping or deflecting, so you get a smooth, precise cut every time even on demanding materials like hardwood, MDF, and laminate.
• Double-Faced Razor-Sharp Cutters - both faces of each cutter are ground sharp, producing clean, tear-free edges on your finished piece without the need for secondary sanding or cleanup passes.
• Exceptional Chip Ejection - the flute geometry is engineered to clear chips quickly and efficiently, allowing more constant, uninterrupted cutting and reducing heat buildup that can dull carbide prematurely.
• CMT Orange PTFE Non-Stick Coating - the trademark orange protective surface prevents resin, pitch, and other residue from bonding to the bit, making cleanup faster and helping the bit maintain peak cutting performance over a longer service life.
• Long-Series Design with 1 1/4" Cutting Height - the extended flute length lets you rout deep grooves, dadoes, and full-depth passes in thick stock that would be impossible to complete with a standard-length straight bit in a single pass.
• 2-Flute Configuration with Right-Hand Rotation - two flutes balance chip load evenly across both cutters, reducing vibration and delivering a consistent surface finish in solid hardwood, softwood, plywood, chipboard, melamine, plastic, and laminates.
• 1/2" Shank Diameter - the larger shank diameter minimizes flex and runout compared to a 1/4" shank, translating to straighter cuts and reduced chatter, particularly important over the longer reach of this series.

Why This Product

• When standard-length straight bits fall short on deep dadoes or thick-panel grooves, the 1 1/4" cutting height of this long-series bit lets you complete the cut cleanly in fewer passes, saving time and reducing wear on both the bit and the workpiece.
• The micrograin carbide cutters combined with the fatigue proof steel body are specifically built to handle heavy routing workloads without sacrificing edge quality, making this bit a reliable choice for high-volume or production-level routing applications.
• The CMT orange PTFE non-stick surface actively resists resin and pitch accumulation, which means less cleaning downtime and a bit that stays sharper longer - especially valuable when routing MDF, melamine, or resin-rich softwoods that tend to leave deposits on uncoated bits.
• Compatibility with handheld routers, router tables, and CNC routing machines gives this bit flexible utility across a variety of setups, from job-site work to shop-based joinery and panel processing.

Specifications

• Manufacturer Part Number: 812.660.11
• Brand: CMT Orange Tools
• Diameter: 16mm
• Cutting Height: 1 1/4"
• Total Length: 2 3/4"
• Shank: 1/2"
• Number of Teeth: 2
• Material: HW (Hardwood Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Straight Bit, Long Series

Approved Applications

• Deep Straight Cuts
• Dadoes and Grooves
• Template Routing
• Panel Joinery
• Through-Cuts in Thick Stock