We used aluminum oxide abrasive, which is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Due to its fast cut-rate, hardness, and strength, it is widely used in grinding applications in addition to sanding and finishing applications. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys.
Heat-resistant resin is a sturdy binding agent that adheres the abrasive to the backing and maintains the stability of the bond even in conditions of high heat or pressure. Cloth-backed discs are known for their durability and flexibility. They’re a good first choice when working with metal or for heavy wood stock removal.
3M Roloc Disc 361F is available for use with the following Roloc attachment systems: TSM, TR, TP and TS. Please select discs with the attachment design made for your system.

Dynabrade 50164 - 3" (76 mm) Dia. TR-Lock, Hard 1/4"-20 Thread Pad Assembly
Dynabrade 58418 6" Dia.Two-Hand Dynorbital Random Orbital Sander, Non-Vacuum
Dynabrade 76016 Foam Pad
Dynabrade 80020 Dynamount Bench Mount (for Dynafile 14000)
Dynabrade 93243 8" Dia. x 1/2" Center Hole, 80 Grit, A/O, Arbor-Mount Sanding Star
Dynabrade 13061 Arbor Assembly 3/8"-24 Female Thread
Dynabrade 94858 25' Max Flow 10mm I.D. Air Hose Assembly, Male (1/4") / Male (1/4") Fitting Ends Included 
