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RTM7 Mounting Mandrel Holder - Essential for Die Grinder Accessories & Cut-Off Wheels, 3/8' Arbor Hole & 1/4' Stem, Ideal for Holding Die Grinder Bits - Rotary Tool Accessories - 2PC

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$12.00

$ 5 .99 $5.99

In Stock

1.NumberofItems:1


About this item

  • ESSENTIAL METALWORKING TOOL: The RTM7 Mandrel is a must have for securely holding die grinder bits. Perfect for precise cutting, grinding, and polishing, this reliable tool ensures efficient and safe operations with your die grinder and rotary tool accessories.
  • PRECISION CUTTING: Achieve accurate cuts with the RTM7 Mandrel, designed to securely hold cut-off wheels. Reduce time and effort while cutting, grinding, and sanding. Ideal for those seeking efficiency and precision in their rotary tool accessories.
  • UNIVERSAL COMPATIBILITY: The RTM7 Mandrel fits most Type 1 cut-off wheels with a 3/8" arbor hole, making it a versatile accessory. Compatible with a wide range of cut-off wheels, this mandrel is essential for any metalworking or die grinder setup.
  • IMPROVED SAFETY: Made from A3 carbon steel, the RTM7 Mandrel ensures a secure attachment of cut-off wheels, reducing the risk of accidents. Work confidently knowing your die grinder and cut-off wheels are safely in place with this robust cut off wheel arbor.
  • DURABLE & LONG LASTING: Constructed from A3 carbon steel with black plating, the RTM7 Mandrel is built to last. Its corrosion resistant design ensures longevity, making it a reliable tool for your die grinder and rotary tool accessories.



Product Description

die grinder bits die grinder accessories die grinder cut off wheel mandrel cut off wheel
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angle grinder straight cut cuttoff wheel carbide cutting wheel die grinder cut off die tool holder

G Gabe
Reviewed in the United States on February 12, 2025
Great Products & Delivery Service
Thomas Richards
Reviewed in the United States on March 17, 2024
Just what I ordered.
Steven
Reviewed in the United States on October 6, 2024
Quality product that’s holding up good.
Trevor Steinacker
Reviewed in the United States on October 22, 2024
Works good seems to be pretty tough. Been dropped on a few times and seems to hold true so far
dictator
Reviewed in the United States on October 2, 2024
they work
ronbrunkala
Reviewed in the United States on September 17, 2023
Great craftsmanship, works perfect with die grinder. Gives me the ability to mount a common 3 " 3/8 hole cut off wheel without buying a separate cutoff tool.
R. Moheban
Reviewed in the United States on February 23, 2023
I'm ignorant of what A3 carbon steel is exactly, but going by appearance and heft it seems hard and strong while being relatively lightweight. How that translates into longevity, only time will tell. It is a well machined mandrel, no problem there. It accepts a variety of discs and attachments, so I'm quite hopeful about its versatility.I hope in fact to keep it with my electric drill stuff rather than with my pneumatic grinder, because the idea of a variable speed cut off tool intrigues me. Of course angle grinders normally are one speed and it's a very high speed, so not exactly great when finesse is needed. This mandrel in conjunction with a small cut off wheel on a 3/8 drill should be handy for certain things that an angle grinder is overkill.Note that fully tightened there is a sizable gap where the disc goes. They included a brass washer to fill some but not all of the gap. It's thus possible with a super thin cutting disc that you'd need an additional washer to get it tightened or else the disc would just flop around and not spin. Not sure why they designed it so the screw piece does not tighten completely - maybe they are saying to not bear down too tightly so the the disc can slip if need be, like a clutch? The instructions are not good; very sparse.This is listed at $8 currently. Not sure how that price compares with the typical home center pricing. I see no reason to believe A3 carbon steel is anything special, though I could be wrong, so I rate this 4 stars. The mandrel seems quite versatile as far as you can put various attachments on it, and chuck it into anything from a little 1/4 drill to a pneumatic grinder to a big 1/2 inch drill.
Customer
Reviewed in the United States on October 5, 2023
I used this in a right angle die grinder into a cutoff tool. I needed to cut off a truck sway bar link bolt.Do not recommend doing this, because the grinder isn't designed to have much of a side load (compare bearing size around the spindle on a right angle die grinder to bearing size of a dedicated cutoff wheel, and you'll see a noticeable size difference). Plus there is no guard if the wheel blows up. Use a face shield with safety glasses just in case.It does get in tight spots better than a dedicated cutoff wheel with guard. Unfortunately too much safety makes work very difficult or impossible.