BHA Zirconia Resin Fiber Discs – 4.5” x 7/8”, 36 Grit, Pack of 25

Overview

Meet the BHA Zirconia Resin Fiber Discs, engineered for reliable grinding, blending, and finishing across a range of materials. Each disc measures 4.5 inches in diameter with a 7/8 inch arbor, and is designed to work with a backing pad and nut on an angle grinder for smooth, controlled operation. The 36 grit profile targets material removal and surface refinement without excessive gouging, making it a versatile choice for daily shop tasks.

What’s included

• Pack of 25 discs
• 4-1/2" diameter with 7/8" arbor hole
• Effective for blending welds and surface finishing
• Suitable for ferrous and non-ferrous metals, wood, fiberglass
• Designed for use with backing pad and nut on an angle grinder

Why zirconia resin fiber discs

The zirconia-infused resin fiber construction balances cutting speed with long life. By resisting heat buildup, they help you maintain control during longer sessions on metal and composite surfaces. The 36 grit provides a balanced profile for initial material removal and progressive finishing.

Real-world applications

Use cases span automotive frame weld blending, furniture refinishing, cabinet edge work, boat hull touch-ups, and workshop repairs. The discs offer reliable performance when transitioning between metal surfaces and wooden contours, helping you prep edges for welding, sealing, or paint prep.

Tips for best results

• Always use with a backing pad and nut; ensure the grinder is off when installing or removing
• Keep the disc flat against the workpiece to avoid gouges and ensure even wear
• Apply steady pressure and moderate speed to monitor material removal and heat buildup

Product at a glance

With a 25-pack, you’ll have replacement discs ready for ongoing projects. The standard 4.5" diameter and 7/8" arbor fit most common grinders, providing broad compatibility for shop workflows. This combination supports efficient prep work across metals, wood, and composites without needing frequent disc changes.

Choosing the right disc for your task

Consider material type, desired finish, and removal rate. For heavy welds, start with these discs, then switch to finer grits for refinement. Always follow safety guidelines when using a grinder.