3M Hookit Film Disc, 5", P120 Grit, 375L, 55678

3M Hookit Film Disc, 5", P120 Grit, 375L, 55678

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  • Premium aluminum oxide abrasive offers a fast cut and long life, and performs well on many surfaces
  • 3M™ Hookit™ disc is easy to change and reuse, maximizing utility for the life of the disc
  • Durable film backing is tear-resistant and provides a uniform, consistent finish
  • Open coat construction provides an aggressive cut
  • Load-resistant coating helps prevent dust and debris from clogging the disc
  • Excellent for contoured surfaces



Application Category
Finishing/Polishing, Orbital Sanding, Paint Prep, Finish & Repair
Finishing, Sanding
Attachment Type
Backing Material
Center Hole Diameter
0.75 Inch
Center Hole Diameter (Metric)
19.05 mm
Coat Type
Open Coat
Reddish Brown
Converted Form
Disc, Non-Standard Size, Hookit™/Hook and Loop Disc, Hookit™/Hook and Loop Disc, Non-Standard Size
5 Inch
Diameter (Metric)
150 mm
Equipment - Machines
Random Orbital Sanders
Form Type
For Use On
Carbon Steel, Composites, Fiberglass, Gelcoat, Glass, Hardwood, Metal, Paint, Plastic, Primer, Softwood, Solid Surface, Topcoats
Hole Configuration
AOEM, Composite, Metalworking, Paint Preparation, Transportation & Heavy Equipment, Woodworking
Mineral Type
Aluminum Oxide
Primary Application
Metalworking, Paint Prep, Coating & Corrosion Removal, Woodworking, Composite & Advanced Materials
Product Form
Sub Industries
Cabinetry, Custom Woodworking and Millwork, Furniture, Primary Wood and Panel Processing
Carbon Steel, Composites, Fiberglass, Gelcoat, Glass, Hardwood, Metal, Paint, Plastic, Primer, Softwood, Solid Surface, Topcoats
Volume (metric)
375 L


3M™ Roloc™ Disc 963G provides a quick attachment and features 3M’s highest-performing ceramic abrasive grain on a durable polyester blend backing for outstanding durability and cutting efficiency on carbon steel and tool steels. The 963G disc offers significant productivity gains for applications such as rapid stock removal, grinding, blending, and deburring on steel.

Designed for High-Pressure Applications 
The 3M™ Roloc™ Disc 963G features heavyweight backing that supports high-pressure applications and a consistent cut-rate, and is resin-bonded to withstand high heat and pressure. The 963G disc can be used wet or dry. 

3M™ Science, Applied to 3M Ceramic Abrasive Grain 
There is a proprietary 3M™ Ceramic Abrasive Grain that is a ceramic mineral chemically engineered with a unique "stay sharp" crystalline structure, which continually reveals fresh cutting edges on the surface of the work piece ensuring a sustained cut. The grain is formed using a process to enhance toughness and hardness of the grain, for long product life and significant productivity benefits. Abrasives made with 3M ceramic abrasive grain have outstanding durability and improved cutting efficiencies. These products have a long service life, cut exceptionally fast and can stand up to high pressure production environments even on the toughest materials. 

Roloc™ System Enables Quick Tool Attachment 
3M™ Roloc™ Disc 936G is available for use with the following Roloc attachment systems: TR, TP and TS. Please select discs with the attachment design made for your system