Built for extended-reach grinding, deburring, and finishing work, the Dotco 12L2674-3A Multiple Extension Inline Die Grinder delivers 0.9 HP and 18,000 RPM in a long inline configuration that enables access to recessed areas, deep cavities, and internal surfaces where shorter die grinders may be limited. Its 1/4″ collet accepts compatible mounted points, carbide burrs, and other properly rated rotary abrasive accessories for controlled material removal.Part of the 12-26 Series, the 12L2674-3A is suited to fabrication, foundry cleanup, weld blending, maintenance repair, and production deburring tasks that require added reach without changing to a right-angle tool. A rear exhaust directs discharged air away from the immediate grinding area, helping keep airflow from blowing directly across the work surface during precision cleanup and finishing operations.Type: Multiple Extension Inline Die Grinder | Model: 12L2674-3A | Series: 12-26 Series | Power: 0.9 HP | Free Speed: 18,000 RPM | Collet Size: 1/4″ | Exhaust: RearFeatures:Multiple-extension inline configuration provides greater reach for grinding and deburring in recessed or difficult-to-access work areas.0.9 HP pneumatic motor supports production material removal, weld cleanup, blending, and surface preparation tasks.18,000 RPM free speed works with compatible rotary abrasive accessories rated at or above the tool’s maximum operating speed.1/4″ collet accepts commonly used mounted points, carbide burrs, and other properly rated die grinder accessories.Rear exhaust helps direct air away from the work surface and abrasive contact area.Inline body style supports controlled positioning when working inside cavities, fabricated structures, and machinery assemblies.Made in USA: Applications:Metal fabrication and welding shops performing weld blending, edge cleanup, and localized grinding in hard-to-reach areas.Foundry and casting cleanup operations removing flash, smoothing internal surfaces, and finishing recessed features.Industrial maintenance and MRO teams servicing machinery components, housings, fixtures, and repaired assemblies.Production deburring stations where added reach helps operators clean drilled holes, slots, and machined features.Automotive, aerospace, and equipment repair work requiring controlled access with 1/4″ shank rotary abrasive accessories.FAQs:Q: What does the multiple extension configuration help with?A: It gives the grinder additional reach for recessed areas, internal cavities, and deep work locations where a standard inline die grinder may be too short.Q: What accessories fit the Dotco 12L2674-3A?A: This model uses a 1/4″ collet, so it accepts compatible 1/4″ shank mounted points, carbide burrs, and rotary abrasive accessories that are properly rated for the grinder’s speed.Q: What speed rating should the abrasive accessory have?A: Any accessory used with this grinder must be rated at or above 18,000 RPM. Never use an accessory with a lower maximum operating speed than the tool.Q: Why choose rear exhaust on an inline die grinder?A: Rear exhaust directs discharged air away from the workpiece area, which can help reduce airflow disturbance while grinding, deburring, or finishing.Q: Is this grinder used for general shop grinding?A: Yes, when paired with the correct 1/4″ shank accessory, it can handle general deburring, blending, and surface preparation, especially where added reach is needed. .spec-accordion{width:100%;max-width:1200px;margin:1em auto;font-family:”Montserrat”,Arial,sans-serif;box-sizing:border-box} .spec-accordion *{box-sizing:border-box} .spec-accordion-toggle{width:100%;display:flex;justify-content:center;align-items:center;position:relative;background:#444;color:#fff;border:0;padding:14px 48px;font-family:”Bai Jamjuree”,Arial,sans-serif;font-size:16px;font-weight:700;text-transform:uppercase;cursor:pointer;text-align:center} 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td>a{word-break:break-word;background:transparent} .spec-accordion.is-mobile-table .group-row td{text-align:center;background:#444;color:#fff} .spec-accordion.is-mobile-table .group-row td::before{content:none} Available Variations and SpecificationsSKUCollet SizeExhaustFree SpeedAbrasive Capacity GrinderWeightLengthAir Inlet Sizer/minLbinin12S2674-2C3/8 in-24eRear180001.25 Cone or Plug Wheel4.1923.51/4 in12S2674-4C3/8 in-24eRear180001.25 Cone or Plug Wheel6.6381/4 in12S2674-5C3/8 in-24eRear180001.25 Cone or Plug Wheel7.745.31/4 in12L2674-1A1/4 inRear180003/4 Carbide Bur, 1-1/2 Mounted Wheel4.1923.51/4 in12L2674-2A1/4 inRear180003/4 Carbide Bur, 1-1/2 Mounted Wheel4.1923.51/4 in12L2674-3A1/4 inRear180003/4 Carbide Burr, 1.5 Mounted Wheel5.330.81/4 in12L2674-5A1/4 inRear180003/4 Carbide Burr, 1.5 Mounted Wheel7.745.31/4 in12S2674-2AM61/4 in | 6mm E300Rear180003/4 Carbide Burr, 1.5 Mounted Wheel4.1923.51/4 in12S2674-4A1/4 inRear180003/4 Carbide Burr, 1.5 Mounted Wheel6.6381/4 in 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