Product Overview
Merit 3/8-Inch Micro-Mini Flap Wheel with 1/8-Inch Shank for Die Grinders
Condition
Unused new old stock (NOS). Abrasive cloth flaps and integrated steel shank are clean and intact, with crisp factory face printing marked Merit, Grit 120, and 40,000 max RPM. Sold individually.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
Merit Abrasives 08834137472 is a micro-mini shank-mounted flap wheel engineered for precision blending, deburring, and edge smoothing in tight spaces. Built with 120-grit aluminum oxide cloth flaps bonded around a 1/8-inch steel mandrel, this Grind-O-Flex wheel continually wears away during use to expose fresh abrasive across varied surface contours.
Key Features
- 3/8-inch outer diameter and 3/8-inch face width for accessing confined cavities and small radii
- Integrated 1/8-inch straight steel shank compatible with high-speed die grinders, rotary tools, and pneumatic spindles
- Rated for operating speeds up to 40,000 RPM
- P120 medium-grit aluminum oxide abrasive on durable J-weight cloth backing
- Permanently mounted radial flap construction delivers consistent cutting and smooth surface finishing
Applications
- Porting and deburring cylinder heads, intake runners, and small engine castings
- Blending welds, removing sharp flashing, and smoothing internal edges on machined metal parts
- Precision metal finishing, jewelry cleanup, and miniature fabrication in hobby or maker workshops
- Cleaning and polishing tight bores, tubing interiors, and recessed fittings
Frequently Asked Questions
What tool collet does this flap wheel fit?
The mounting shank has a 1/8-inch diameter, fitting standard 1/8-inch collets on die grinders, rotary tools, flexible shaft machines, and portable drills.
What is the maximum recommended operating speed?
The wheel is factory-rated for a maximum operating speed of 40,000 RPM.
Why buy individual flap wheels instead of a full multi-pack?
Most industrial distributors only sell micro-mini flap wheels in boxed quantities of 10 or 25, forcing you to buy surplus shop stock when you only need a few pieces to complete a repair or project. Here you purchase the exact count your job requires. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, qualify for free shipping at $28 and above, and leave our Idaho warehouse the same or next business day.
When you are working down inside a tight casting or smoothing an internal radius, standard abrasives are just too bulky to reach. Chuck this little wheel into your spindle, get right into the corner, and finish the job clean.
