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4" Long Reach Heavy Duty 1/4" Collet Extension Tool – Carbide Burr & Bit Holder for Die Grinder – Extended Reach for Engine Porting, Precision Grinding, Auto & Industrial Use

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Product details

Management number 210016420 Release Date 2026/04/02 List Price $15.60 Model Number 210016420
Category

The Pro-Graad 4" Long Reach 1/4" Collet Extension Tool is a heavy-duty solution designed for professionals who need reliable access to deep, tight, or awkward spaces. With its extended length, this tool enables die grinders to reach areas that are typically inaccessible with standard extensions—making it an essential addition for engine porting, precision grinding, and maintenance work in automotive, industrial, and construction settings. Built with a secure 1/4” collet, the extension holds carbide burrs, drill bits, and rotary tools firmly in place. This stability not only ensures precise performance during detailed tasks like deburring, polishing, and finishing, but also reduces the risk of tool slippage or operational errors. The added reach gives users better leverage and control, helping to produce cleaner results with less effort. Comfort and safety are also enhanced thanks to the tool’s extended length. Operators can maintain a safer distance from flying debris and hot surfaces, lowering the chance of accidental contact or injury. Additionally, it allows for a more ergonomic working position, which minimizes fatigue and hand strain—especially important during long or repetitive jobs. Whether you're navigating around engine blocks, inside confined equipment housings, or working along tight weld seams, the Pro-Graad Extension Tool makes it easier to complete tough jobs with precision and confidence. It’s a perfect match for USA-made carbide burrs and various ¼” shank accessories, delivering dependable performance in demanding environments. If you're serious about your craft and need a tool that helps you work smarter and safer, this long-reach collet extension is a must-have in your toolkit.

  • [IN THE BOX]: 1 each Pro-Graad 4" Long Reach Heavy Duty 1/4" Collet Extension Tool. NOTE: Never exceed the product’s Maximum RPM when using accessories with the adapter.
  • [EXTENDED REACH FOR HARD TO ACCESS AREAS]: The 4" long extension allows your die grinder to reach deep, tight, or awkward spots that are normally out of reach—perfect for engine porting, industrial maintenance, and tight corners.
  • [ENHANCED PRECISION & CONTROL]: The added length provides superior leverage for steady, controlled grinding. Ideal for detailed work where accuracy matters, such as deburring, polishing, or finishing in confined areas.
  • [HEAVY DUTY 1/4" COLLET COMPATIBILITY]: Built to securely hold 1/4" shank carbide burrs, drill bits, and rotary tool accessories. Designed for professionals in automotive, metalworking, and construction who demand strength and stability.
  • [IMPROVED SAFETY & COMFORT]: Work from a safer distance to avoid debris and reduce hand strain. The extended design promotes a more ergonomic working position—especially helpful during long grinding sessions.
  • [PRODUCT GUARANTEE]: All Pro-Graad products are made with quality materials, which exceed ANSI and EU standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is a USA Company with US Based Customer Support.
UPC 810195111777
Capacity 0.25 Inches
Lock Type Self Centering
Brand Name Pro-Graad
Handle Type hand-tightened
Item Weight 1.8 Ounces
Thread Size 1/2-20 UNC
Manufacturer Pro-Graad
Item Diameter 0.25 Inches
Material Type Stainless Steel (main body), Spring Steel (collets)
Compatible Devices Die Grinders & Drills. NOTE: Never exceed the product’s Maximum RPM (18,000) and apply significantly reduced pressure when using accessories with the adapter to prevent shank bowing and ensure operational stability and safety.
Included Components 1 each Pro-Graad 4" Long Reach 1/4" collet extension tool
Manufacturer Part Number LR414

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