Flap Discs for Angle Grinder. Types, Uses & Benefits
Types of Flap Discs. Before you buy the discs, you should know about the different types of flap discs. The two main types of flap discs are Type 27 and Type 29. Type 27 vs. Type 29 Flap Discs. The differences between the Type 27 and Type 29 flap discs are in the angle.