Abrasive Hook-and-Loop Disc KLINGSPOR 125 mm K80 Zirconia Alumina, pack of 50 (model 237781)

KLINGSPOR 125 mm K80 Zirconia Alumina hook-and-loop abrasive discs are designed for medium material removal on metal and wood. Each disc features a durable zirconia alumina abrasive grain that maintains cutting performance and resists loading during heavier sanding tasks. Supplied as a pack of 50, these 125 mm discs fit standard 125 mm backing pads and are compatible with orbital and rotary sanders for stock removal, blending welds and surface preparation prior to painting or finishing.

Advantages

The zirconia alumina grain offers high cut rate and long life compared with conventional aluminum oxide, providing consistent performance across the life of the disc. The hook-and-loop (velcro) backing enables quick disc changes and secure attachment to 125 mm backing pads. The open-structured abrasive resists clogging when working on wood and painted surfaces, while the robust backing supports effective pressure transfer for medium to aggressive sanding.

Suitable for

• Removing mill scale, rust and paint from metal surfaces
• Blending and smoothing weld seams
• Shaping and leveling wood and composite materials
• Surface preparation before priming and painting

Key specifications

• Disc diameter: 125 mm
• Abrasive grain: zirconia alumina
• Grit: K80 (medium/coarse)
• Attachment: hook-and-loop (velcro) backing
• Pack size: 50 discs
• Compatible tools: orbital sanders and rotary angle sanders with 125 mm backing pad

How to use

Fit the 125 mm disc onto a compatible backing pad using the hook-and-loop attachment, ensuring the disc is centered and securely attached. Operate the sander at the recommended speed for the chosen tool and apply steady, even pressure; avoid excessive force which can reduce disc life and increase heat. For best results on metal, begin with K80 to remove material and follow with finer grits for finishing. Replace discs as abrasive wear reduces cutting performance.

Usage recommendations

Use appropriate personal protective equipment: safety goggles, dust mask and hearing protection. Match disc grit to the task—K80 is suitable for medium stock removal and weld blending. For prolonged sessions, allow the tool and workpiece to cool periodically to maintain abrasive life and consistent results.