Description
20 Grit Red Teardrop Cupwheel – 4.5″ – perfect for aggressive concrete grinding with no horseshoe marks. Medium bond. Fits standard dust avenger 005 shrouds.
The cupwheel is designed for maximum aggression on tough concrete surfaces. It’s the most popular and powerful option for surface prep where fast removal is required. The unique teardrop segment layout delivers deep cutting action while eliminating the horseshoe scratch pattern often left by traditional segments.
Featuring large diamond particles in a medium bond, this cupwheel provides a better bonding profile for coatings and overlays. The 20 grit red teardrop cupwheel bites into the surface fast and holds up under extreme pressure. Contractors choose this for its ability to grind rough, spalled, or coated concrete effectively in fewer passes.
It’s compatible with most 4.5″ and 5″ grinders and fits common dust shrouds including Cobra and Dust Avenger models. Life expectancy is approximately 10–15 hours depending on surface hardness. Premium segment quality ensures long-term performance without sacrificing speed.
Key Features:
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20 Grit diamond segments for ultra-aggressive grinding
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Teardrop pattern avoids horseshoe marks – Similair in style to the Red S / Z or Cobra Segment
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Larger diamonds in the matrix for more scrratch and stronger bonding profiles
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Medium bond suitable for soft to medium concrete
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Fits Cobra, S-segment, and Avenger-style shrouds
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Available in other sizes like 7″ for larger grinders
Contractors love this 20 grit red teardrop cupwheel for its ability to open up surfaces fast while still maintaining a clean finish. It’s ideal for prepping slabs for epoxy, removing thinset or glue, or creating the right profile for resurfacing jobs. The aggressive nature of the 20 grit ensures minimal passes with maximum effect.
For best dust control, pair this wheel with our Dust Avenger vacuum system.
Learn how grit and segment design affect grinding performance in concrete prep.
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