The CMT 812.120.11 Straight Bit Long Series is a professional-grade 12mm diameter router bit engineered for deep straight cuts, dadoes, grooves, and panel joinery in solid wood, plywood, MDF, and a wide range of sheet goods. Built by CMT with a 1/4 in. shank and an extended 1 1/4 in. cutting height, this long-series straight bit reaches deeper than standard-length bits, making it the go-to choice for template routing, housing joints, and full-depth groove work on the router table or with a handheld router. Its micrograin carbide cutters and CMT orange non-stick coating set it apart from generic bits, delivering a smooth, precise cut even under heavy production loads.

Key Features

• Micrograin Carbide Cutters on Special Fatigue Proof Steel Bodies - the combination of micrograin carbide edges bonded to fatigue-resistant steel means the bit stays sharp longer and resists flex under heavy feed loads, reducing tearout and chipping on finished surfaces.
• Double-Faced Razor-Sharp Cutters - two precision-ground cutting faces produce a beautiful, clean edge on both walls of every groove or dado, so workpieces need little to no sanding after routing.
• Exceptional Chip Ejection Geometry - the flute design clears waste material quickly and continuously, keeping the cut path clear for more consistent, cooler cutting without burning or clogging.
• CMT Orange PTFE Non-Stick Coating - the trademark orange surface protection prevents resin, pitch, and other residue from building up on the bit body, reducing friction-related heat, protecting against corrosion, and making cleanup fast between uses.
• Long Series Design at 1 1/4 in. Cutting Height - the extended cutting length reaches depths that standard straight bits cannot, opening up applications like deep housing joints, full-thickness MDF dadoes, and guided template cuts in thicker stock.
• 1/4 in. Shank with Right-Hand Rotation - fits the most common collet size found on trim routers, compact routers, and full-size router tables, making it immediately compatible with a wide range of machines without adapters.
• 2-Flute Configuration - two cutting edges provide a balance of material removal rate and surface finish quality, suitable for both aggressive stock removal and fine finish passes in hardwood and softwood.

Why This Product

• The long-series cutting height of 1 1/4 in. solves the reach limitation of standard straight bits, letting you rout full-depth dadoes and grooves in thicker panels - including MDF, chipboard, and laminate board - in a single pass rather than multiple shallow passes.
• The micrograin carbide construction paired with the PTFE non-stick coating means the bit resists both edge wear and resin fouling, so you maintain a clean, precise cut across long production runs without stopping to clean or swap bits.
• With a 12mm diameter and a 1/4 in. shank, this bit is sized for metric groove widths that match common European hardware standards, making it a practical choice for cabinet making and furniture joinery where metric dimensions are specified.
• The double-faced cutter geometry delivers a smooth, finished wall on both sides of every cut, reducing secondary operations like hand-sanding or paring - a direct time and labor saving on any woodworking or cabinetry project.

Specifications

• Manufacturer Part Number: 812.120.11
• Brand: CMT Orange Tools
• Diameter: 12mm
• Cutting Height: 1 1/4 in.
• Total Length: 2 3/8 in.
• Shank: 1/4 in.
• Number of Teeth: 2
• Material: HW (Micrograin Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Straight Bit, Long Series

Approved Applications

• Deep straight cuts in solid hardwood and softwood
• Dadoes and grooves in plywood, MDF, and chipboard
• Template routing with guide bearings or guide bushings
• Panel joinery and housing joints in cabinet and furniture work
• Grooving in laminates, melamine, and plastic sheet material