Mirka Iridium 5" 89-Hole Grip Sanding Discs, 24-5MH Series

Product Overview

Mirka Iridium 5" 89‑Hole Grip Sanding Discs (24‑5MH Series) are premium high‑performance sanding discs engineered for fast cutting, long life, and exceptional dust extraction. Designed for universal sanding across automotive, marine, woodworking, composite, and industrial applications, Iridium delivers a smoother finish with fewer sanding steps.

Iridium uses a premium ceramic and aluminum oxide grain blend for fast, efficient cutting, providing an aggressive initial cut and maintaining sharpness throughout the sanding process. A dust‑repellent precision coating reduces clogging and pilling, keeping the abrasive cutting clean longer and improving finish consistency.

The advanced low VOC resin system enhances grain adhesion, while the flexible latex C‑paper backing provides excellent durability and control. The optimized 89‑hole multi‑hole pattern maximizes dust extraction, creating a cleaner work environment and extending disc life.

Iridium 5" discs fit any 5" grip (hook & loop) backing plate, regardless of hole configuration.

Packaging: 50 discs per box
Grit Range: 40, 60, 80, 120, 150, 180, 240, 320, 400, 600, 800, 1000

Key Features & Benefits

• Premium ceramic + aluminum oxide grain blend for fast, efficient cutting
• Dust‑repellent precision coating reduces clogging and pilling
• 89‑hole multi‑hole pattern for superior dust extraction
• Flexible latex C‑paper backing for durability and control
• Low VOC resin system improves grain adhesion and safety
• Consistent scratch pattern for reliable surface preparation
• Fits all 5" grip backing plates — any hole configuration
• Excellent performance on soft and hard surfaces

SMSDistributors.com Expert Notes

Mirka Iridium 5" 89‑Hole Discs are engineered for professionals who demand speed, efficiency, and predictable finish quality. The ceramic/aluminum oxide blend provides a noticeably more aggressive initial cut compared to standard aluminum oxide discs, making Iridium ideal for stock removal, leveling filler, paint removal, and intermediate sanding.

The dust‑repellent precision coating — noted by Mirka as reducing “clogging and pilling” — keeps the abrasive cutting clean longer, especially on primers, paints, and composite materials. Combined with the optimized 89‑hole pattern, Iridium offers some of the best dust extraction performance available in a paper abrasive.

Iridium’s flexible latex C‑paper backing maintains strong grain adhesion even under heavy use, and the discs perform exceptionally well on both soft and hard surfaces. For shops looking to reduce sanding steps, improve consistency, and increase abrasive life, Iridium is one of Mirka’s most advanced sanding disc families.

Technical Specifications

• Grain: Ceramic + Aluminum Oxide
• Color: Gray
• Attachment: Grip (hook & loop)
• Backing: Latex C‑weight paper
• Bonding: Low VOC resin system
• Grits: 40, 60, 80, 120, 150, 180, 240, 320, 400, 600, 800, 1000
• Coating: Semi‑open
• Hole Pattern: 89‑hole multi‑hole
• Quantity: 50 discs per box

Grit Selection Guide

• 40–60 grit: Heavy stock removal, shaping, paint removal
• 80–120 grit: Leveling filler, intermediate sanding
• 150–240 grit: Surface prep, smoothing wood and composites
• 320–400 grit: Pre‑finish sanding, primer prep
• 600–1000 grit: Fine finishing, clear coat prep, blending

Best For

• Automotive bodywork and refinishing
• Marine gelcoat and composite sanding
• Woodworking and furniture finishing
• Paint removal and surface preparation
• Solid surface and countertop fabrication
• General sanding across soft and hard materials

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About Us

SMSDistributors.com is an authorized Mirka distributor supplying professional‑grade abrasives, sanding tools, and surface preparation products for automotive, marine, woodworking, and industrial applications. With over 15 years of experience, we provide fast shipping, expert support, and reliable products trusted by professionals nationwide.

Category: Mirka, Iridium, Sanding Discs, Ceramic Abrasives, 5‑Inch Discs, Multi‑Hole Discs