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SATC Flap Discs Review: Versatile grinding and finishing for metal and wood

SATC Flap Discs 115mm 20 Pack Grinding Discs 40/60/80/120 Grit for Angle Grinder to Sanding Grinding Metal Wood
4.7
[Heavy-Duty Construction]  Aluminum oxide flaps on multi-layer fiberglass backing for long-lasting, high-strength performance.
[Versatile Grit Selection]  Pack of 20 discs: 40/60/80/120 grits, five pieces per grit for diverse tasks.
[Vibration-Free Operation]  Concentric, evenly distributed flaps reduce vibration for smoother, more controlled grinding.
[Optimized Angle Use]  Type 27 design performs best at 0–15° for efficient smoothing and blending.
[Low Contamination Safety]  Contains ≤0.1% iron, sulfur, chlorine — safer for health and contaminant-sensitive work.
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Workshop sanding and grinding discs designed for durable, multi-grit performance on metal and wood. The 20-pack SATC Flap Discs keeps you working through coarse to fine stages with fewer disc changes. Are these the right discs for restoration projects and routine metalwork?

⚡ At a Glance
  • Sanding Performance: Aggressive stock removal with 40 grit, progressive smoothing through 60 and 80, and fine blending with 120 grit
  • Best for: Tradespeople and DIYers needing a multi-grit set for paint stripping, metal shaping and final blending
  • Not ideal for: Precision finishing where specialised fine abrasives or polishing pads are required

Twenty 115mm Type 27 flap discs come in four grits, five of each. High-strength polyester flaps and a multilayer fibreglass backing plate balance durability with smoother operation.


Longer useful life and consistent cutting – thanks to high-strength polyester flaps and aluminium oxide grains

Layers of polyester flaps impregnated with premium aluminium oxide form a renewing abrasive surface as the outer flaps wear, keeping cutting action steady. The multilayer structure spreads wear evenly across the disc.

Fewer disc changes during extended grinding, so sessions run longer and abrasive life stretches across multiple jobs.

Versatile finishing across tasks – with four grit ranges in a single pack

Pack contains five discs each of 40, 60, 80 and 120 grit, allowing progression from heavy material removal to finer blending without buying separate packs. Type 27 geometry suits surface smoothing.

One purchase covers paint stripping, metal stock removal and final sanding, reducing the need for additional abrasive types.

Smoother, lower-vibration operation – thanks to concentric flap placement and a fibreglass backing plate

Flaps are distributed concentrically and tightly tied to a multilayer fibreglass backing plate, which improves balance and rigidity under load. That reduces wobble and helps maintain steady contact with the workpiece.

Grinding feels steadier and control improves, lowering operator fatigue and producing more even finishes when used at the recommended 0 to 15 degree angle.

✨ The 4 Key Reasons for SATC Flap Discs
  1. Premium aluminium oxide – Maintains cutting edge longer for consistent material removal and fewer disc changes
  2. Four-grit assortment – Covers heavy stripping to fine blending in one 20-disc pack
  3. Fibreglass backing plate – Adds strength and stability, reducing wobble under load
  4. Low contaminant content – Contains ≤0.1% iron, sulfur and chlorine, reducing cross-contamination risk
📋 Technical Details at a Glance
  • Category: Flap discs for angle grinder
  • Diameter: 115mm
  • Pack quantity: 20 discs
  • Grits included: 40, 60, 80, 120 (5 discs each)
  • Abrasive material: Aluminium oxide grains
❓ Frequently Asked Questions

Q: Are these flap discs suitable for metalwork and woodworking?

A: Yes, designed for both metal and wood, with grits appropriate for paint stripping, stock removal and final smoothing.

Q: What angle and disc type should be used with these discs?

A: Type 27 geometry is recommended, used at a shallow 0 to 15 degree angle for smoothing and blending surfaces.

Q: Do the discs risk contaminating sensitive metals?

A: Discs contain no more than 0.1% iron, sulfur and chlorine, which minimises contamination risk in applications where low contaminant levels matter.

🏆 Our Verdict

Suitable for tradespeople and DIYers who need a single pack to cover coarse removal through fine blending. Durable polyester flaps paired with aluminium oxide grains and a fibreglass backing plate deliver steady cutting and lower vibration. While individual budgets vary, the combination of grit variety and robust construction makes these a practical long-term value for regular workshop use.