3M 7000119278 Hookit Abrasive Sheet 120 Grit 3x4 in

Product Description

The 3M 7000119278 is an aluminum oxide Hookit abrasive sheet designed for sanding flat and contoured surfaces in professional finishing applications. Built on a C-weight paper backing, this sheet delivers a firm yet flexible platform suited for material removal and surface prep. The open-coat construction reduces loading and keeps the abrasive cutting longer between sheet changes. At 120 grit, it sits in the medium range, making it a practical choice for intermediate sanding passes before finer finishing steps. Licensed HVAC techs, automotive refinishers, woodworkers, and general trade professionals reach for this sheet when consistent cut and abrasive life matter on the job.

This sheet is well-suited for use on wood, metal, primer, filler, and composite substrates in both residential and light commercial environments. The Hookit attachment system allows fast, one-hand sheet changes on compatible 3M Hookit backup pads and sanders, reducing downtime during high-volume sanding operations. It is sold individually and is typically purchased in quantity for production or fleet service work.

Key Features

• 120 grit aluminum oxide abrasive for medium material removal and surface leveling
• C-weight paper backing provides a firm, stable sanding platform
• Open-coat construction resists loading on soft woods, fillers, and primers
• Load-resistant coating extends usable abrasive life between sheet changes
• Hookit attachment system enables fast one-hand sheet swaps on compatible backup pads
• Works on a variety of substrates including wood, metal, and composite materials

Compatibility

Designed for use with compatible 3M Hookit backup pads and random orbital sanders that accept the Hookit hook-and-loop attachment system.

Installation Notes

Attach the sheet firmly to a compatible Hookit backup pad before use, ensuring full contact across the abrasive face. Inspect the hook-and-loop interface regularly and replace sheets when grit is worn or loading is no longer cleared by normal use. Always wear appropriate respiratory protection and eye protection when sanding, in accordance with applicable safety standards. Dispose of used abrasive sheets per local regulations for dusty or contaminated materials.

Technical Specifications

• Grit: 120
• Abrasive Mineral: Aluminum Oxide
• Backing Weight: C-Weight Paper
• Coat Type: Open Coat
• Sheet Size: 3 inches x 4 inches
• Attachment Type: Hookit Hook-and-Loop
• Weight: 0.01 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000119278