Speed, Long Life, and Ease of Use
Engineered for faster cutting, sustained performance, durability and increased throughput, our 3M™ Cubitron™ II Roloc™ Fibre Discs 786C is a game changer, featuring our Precision-Shaped Grain technology.
About 3M™ Cubitron™ II and Precision-Shaped Grain
3M™ Cubitron™ II abrasive discs, cutoff wheels and file belts have raised the bar for high-performing abrasives. Cubitron™ abrasives feature our Precision-Shaped Grain (PSG) technology, which allows our engineers to control the geometry of the abrasive grain for a truly fast, efficient cut. Instead of simply crushing the abrasive into particles, 3M uses microreplication to uniformly size ceramic grains and precisely shape them into triangular structures – essentially, sharp peaks that slice, not plow, through paint and metal. These grains are electrostatically oriented on the abrasive surface for the most efficient cut and even wear. What’s more, PSG fractures during use to maintain sharp abrasive edges. The result: Cubitron™ II cuts 30% faster and lasts 2x longer than conventional ceramic abrasives.
Time-Saving Quick Change Attachment
Our 3M™Fibre Roloc™ Disc Quick Change Attachment System is convenient and saves time. Discs screw securely into the threaded mandrel without tools. Ideal for applications requiring frequent grade or disc size changes. For best results, use Fibre Roloc™ Discs with 3M™ Power Tools. 3M abrasives, accessories and power tools are optimized to work together and help you attain maximum productivity.
Recommended Applications
Choose the 3M™ Cubitron™ II Roloc™ Fibre Discs 786C for medium to heavy-duty metalworking such as weld grinding and clean-up, as well as edge chamfering, beveling, and paint removal processes.
- Clean and remove coatings
- Deburr metal
- Remove gaskets
- Polish and shape metal
- Remove oxidation, paint and rust
- Cut spot welds
- Strip paint to metal
- Slotted for cutting off weld and door skin removal
Tech Tip
Use 3M™ Disc Pad Face Plates – Red Ribbed – to optimize product life of Cubitron™ II Fibre Discs – grades 36+, 60+ and 80+.
A Portfolio of Abrasive Systems Solutions
From specialty abrasives designed for a highly specific purpose to versatile sheets, 3M provides an abrasive to accomplish your task or perfect your system. At 3M, we draw from a wealth of original technologies and breakthrough inventions to provide a broad portfolio of abrasives that shape, finish and polish with ease and precision.

Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
Dynabrade 64993 2" x 36" (51 mm x 914 mm) Electric Tool Post Grinder (Air Tension), 2 hp, 2,850 RPM, Wet, 230 V (AC), 1 Phase, 50 Hz
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 40320 Dynafile II Abrasive Belt Tool
Dynabrade 94853 50' Max Flow 5/16" I.D. Air Hose Assembly, Male (1/4") / Male (1/4") Fitting Ends Included
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 94825 - 1/2" ID, 5' Long Air Hose Assembly, Female/ Male Fitting Ends Included
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
Dynabrade 11677 Dynabelter Contact Arm Assembly,4 Inch Dia x 1 Inch W, 40 Durometer, Plain Face
Dynabrade 11245 Contact Arm Ass'y, 5/8" Dia. x 1/8" W, Rubber Wheel, with 1/4" W Platen - 14" Reach
3M 06068, Perfect-It EX Ultrafine Machine Polish, 06068, 1 qt (32 fl oz/946 mL), 6 per case, 7100061948
Dynabrade 11241 Contact Arm Ass'y, 5/8" Dia. x 1/8" W, Rubber Wheel, with 1/4" W Platen - 9" Reach
Dynabrade 11214 Contact Arm Ass'y, 7/16" Dia. x 3/8" W, Rubber Wheel, with 1/2" W Platen
Dynabrade 11656 Contact Arm Extender Adaptor
Dynabrade 11258 Stroke Sander Contact Arm Ass'y, 1/2" Dia. x 3/8" W, Steel Wheel and 5/8" Dia. x 3/8" W, Rubber Wheel
Dynabrade 79885 5" Dynacut 220 Grit Extreme Orange Scalloped Edge, 50 per box
Dynabrade X51S 5" Dia. Non-Vacuum Dynorbital_ Extreme Random Orbital Sander, PSA W/ Speed Regulator
3M 86992, Diamond Disc, 3" Roloc, 674W, 120 Mesh, TR, 7100143477, Box of 5
Dynabrade X52 5" (127 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, PSA
Dynabrade 59038 5" Dia. Self-Generated Vacuum Dynorbital-Spirit Random Orbital Sander, 3/32" Orbit
Dynabrade X3151V - 3" Mini Extreme & 5" Extreme Random Orbital Sander, Vac, Combo Kit 12,000 RPM, 3/16" Dia., Rear Exhaust
Dynabrade X52H 5" (127 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, Hook-Face
Dynabrade 59020 5" Dia. Non-Vacuum Dynorbital-Spirit Random Orbital Sander, 3/16" Orbit
Dynabrade 58415 5" Dia. Non-Vacuum Two-Hand Dynorbital Random Orbital Sander
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade X52VHS 5" Dia. Vacuum Dynorbital Extreme Random Orbital Sander, Hook Pad W/ Speed Regulator
Standard Abrasives 713159, Aluminum Oxide Handy Roll, P120 J-weight, 1-1/2 in x 50 yd, 7010290409 
