40 Pack 4-1/2" Flap Discs 40 Grit Zirconia T27 Angle Grinder Metal Rust

Upgrade your grinding performance with PRETEC 4.5-inch zirconia flap discs. Designed for aggressive material removal, weld grinding, deburring, rust removal, sanding, and surface preparation, these 40 grit flap sanding discs are a practical choice for metalworking, fabrication, repair work, and DIY projects.

Each disc is made with high-density zirconia abrasive for strong cutting performance and long-lasting durability. The Type 27 flat profile provides better contact on flat surfaces, making it ideal for grinding, smoothing, and blending metal surfaces with control.

Includes 40 pieces of 4.5" flap discs, ideal for frequent grinding work, workshop use, metal fabrication, and replacement stock. A cost-effective choice for both professional and DIY users.

The coarse 40 grit design is built for aggressive grinding and fast material removal. Great for removing weld seams, rust, paint, burrs, sharp edges, and surface buildup.

Made with high-density zirconia alumina abrasive, these flap discs deliver strong cutting power, heat resistance, and longer service life compared with standard aluminum oxide sanding discs.

The Type 27 flat design is ideal for flat surface grinding, edge blending, weld smoothing, and controlled finishing work. Recommended working angle: approximately 5°–15°.

The reinforced fiberglass backing plate helps provide stability, vibration control, and safer grinding performance during high-speed operation.

Designed for use with standard 4-1/2" angle grinders using a 7/8" arbor. Suitable for grinding, sanding, blending, deburring, and rust removal.

• Brand: PRETEC
• Type: Flap Disc / Flap Sanding Disc
• Diameter: 4.5 in / 4-1/2 in
• Arbor Size: 7/8 in
• Grit: 40 Grit
• Abrasive Material: Zirconia Alumina
• Disc Type: Type 27 / T27 Flat Profile
• Backing Material: Fiberglass
• Quantity: 40 Pack
• Suitable Tool: Angle Grinder
• Application: Grinding, Sanding, Rust Removal, Deburring, Weld Blending, Surface Preparation
• Suitable Materials: Metal, Steel, Stainless Steel, Wood

40 × 4.5" 40 Grit Zirconia Type 27 Flap Discs

PRETEC zirconia flap discs are built for users who need fast grinding, strong durability, and consistent performance. The 40 grit abrasive removes material quickly, while the reinforced fiberglass backing helps maintain stability during operation. Whether you are cleaning welds, removing rust, smoothing edges, or preparing surfaces, this 40 pack set gives you reliable performance and better value for repeated grinding jobs.