INCIKITI 115mm Type 29 flap discs for angle grinders (20 pack, mixed grits)
Product description
The essentials
If you do any regular grinding and edge work with a 115mm angle grinder, flap discs are one of those “grab-and-go” accessories. The INCIKITI 20-piece set is built around Type 29 bevel flap discs with a 115mm diameter, and a mixed grit spread (40/60/80/120) so you can move from faster material removal to a finer finish without having to buy separate packs straight away.
On paper, this looks like a practical household-to-trades bundle rather than a specialist finishing kit. You get a decent progression of grits, and the Type 29 bevel design is aimed at making corner and edge grinding more precise than flatter styles.
Key features that matter in use
What tends to separate flap discs in the real world is how they behave under pressure, how stable they feel, and how consistent the abrasive is as you work.
- Mixed grit selection (40/60/80/120): the set includes 10 discs at 40 grit, then fewer at 60, 80 and 120. That heavier 40-grit share is useful when you expect to do more roughing than finishing.
- Type 29 bevel for edge and corner work: the bevel is specifically mentioned as improving precision on edges and corners, which is exactly where most people feel the limitations of “generic” grinding discs.
- Zirconia abrasive material: zirconia is positioned here as stronger and more durable, with the claim of longer service life even under high temperatures and pressure.
- Fibreglass backing plate: this is designed to absorb vibrations without smearing, which should help the disc feel more stable and efficient during use.
- Maximum speed of 13,300 RPM: if you’re matching discs to a grinder and you care about staying within rated performance, this is an important detail to check before fitting.
There’s a catch, though: the product description covers compatibility in broad terms, but it doesn’t spell out every grinder model, so you’ll still want to verify your grinder’s arbor and whether it takes a 7/8" arbor size.
Where it shines (and what it’s realistically for)
Flap discs like these are typically chosen when you want an aggressive, controlled grind that can also help with smoothing compared with straight cutting discs. The listing states suitability across a range of materials, including metal, stainless steel, wood, rubber, plastic and fibreglass.
A micro-example: imagine you’re tidying up a weld line on stainless. You might start with a coarser grit (40) to level the bead, then move through 60 and 80 to reduce visible marks, finishing with 120 for a cleaner surface. If you then switch to a different job—say, sanding down a rough edge on a wooden component—having multiple grits in one pack saves the “which disc do I grab?” moment.
This set also leans “most cost-effective when you use a range of grits”. If your work is mostly ultra-rough only (or you only ever need one grit), you might not get the mix-to-value benefit.
The main limitations to keep in mind
This pack is designed to be versatile, but that doesn’t mean it’s always the best choice for every situation.
- Mixed grits are convenient, but not equal: you’ll get the most at 40 grit. If you’re planning lots of fine finishing, the 120 grit count is relatively low in this bundle.
- General material claims vs. your exact job: it mentions multiple materials, yet results can vary based on the workpiece, thickness, heat build-up and your technique. It’s not the same as choosing a disc specifically engineered for one material/finish.
- Compatibility needs checking: it states 7/8" arbor size and 115mm diameter for compatibility with most angle grinders, but “most” still means you should confirm fit.
Tech specs (the bits you should check before buying)
- Type: Type 29 bevel grinding discs
- Size: 115mm diameter
- Arbor size: 7/8"
- Abrasive material: zirconia
- Backing: resin fibre construction with fibreglass backing plate
- Maximum speed: 13,300 RPM
- Grit breakdown: 10x 40 grit, 5x 60 grit, 3x 80 grit, 2x 120 grit
If any of these don’t line up with your grinder setup, it’s worth stopping there rather than assuming the pack will fit.
Quick FAQ for flap disc buyers
Is it suitable for edge and corner grinding?
The Type 29 bevel design is specifically described as improving precision for edge and corner grinding, which is the main reason people pick this style.
What grits do you get in the 20-pack?
You get 40, 60, 80 and 120 grit, with 40 grit making up the biggest share.
What materials does it claim to work on?
The listing mentions metal, wood, stainless steel, rubber, plastic and fibreglass.
Will it fit most 115mm angle grinders?
It’s presented as 115mm discs with a 7/8" arbor size, described as compatible with most angle grinders. Still, it’s smart to check your grinder’s arbor size.
Should you buy it?
A solid pick if you want a single 115mm flap disc pack that covers roughing through to lighter finishing, and you’re happy with a bevel Type 29 approach aimed at edges and corners. It also makes sense if you value vibration control (via the fibreglass backing plate) and want a mix of grits to avoid buying extra discs for small-to-medium projects.
It’s not the best choice if you only ever use one grit level, or if you need a very specific finishing grade arrangement (because 120 grit is only a small part of the pack). You may also want to skip it if you can’t confirm the 7/8" arbor fit for your angle grinder—this is one of those accessories where compatibility matters.
Overall, for everyday grinding tasks where versatility and practical value matter, this set should do the job—just make sure the disc size and arbor match your grinder before you commit.