3M Hookit 120 Grit 5" review

Name: 3M Hookit 5-Inch Disc, 120 Grit (25-pack)
Brand: 3M

Form

Discs

Grit

120 grit

Material

aluminum oxide

The verdict

Where this pick fits.

120-grit Hookit for the pass that makes 150 feel earned. Opens the pores without closing off the next step.

The pass that makes 150 feel earned.

Quick take

Best for: pre-finish prep, paint adhesion prep, between 80 and 150
Format: Discs
Tier: Mid tier
Grit lane: 80, 100, 120, 150

Use it when

The fit is obvious.

· Reach for the 3M Hookit 120 Grit 5" when the job is pre-finish prep, paint adhesion prep, and between 80 and 150: that is the fight it was built for.
· Aluminum oxide is the reliable one: cheap, tough, no surprises and no complaints. It will outlast your patience before it outlasts the job.
· This is the working middle: enough bite to matter, refined enough to leave the job somewhere worth continuing.

Skip it when

The job asks for something else.

· Leave it if you are actually solving a different stage of the climb than the one this pick was chosen for.
· Leave it if you already know you want the premium option; a mid-tier pick is a compromise, and you clearly are not in the mood for one.
· Leave it if the work is edges, profiles, and tiny repairs: those are easier to control by hand.

Best for

Where it earns its keep.

· pre-finish prep
· paint adhesion prep
· between 80 and 150

Keep moving

Useful next clicks.

Read the grit chartSee where this pick sits in the full climb.Browse projectsSee the exact grit climb for your job.

Buyer questions

The practical questions.

What is the 3M Hookit 120 Grit 5" actually good at?

120-grit Hookit for the pass that makes 150 feel earned. Opens the pores without closing off the next step. In short: it earns its keep on pre-finish prep, paint adhesion prep, and between 80 and 150.

Is 120 the right grit lane for this?

It sits closest to 80 grit, 100 grit, 120 grit, and 150 grit. This is a cutting stage, not a finish stage. Use it to remove material, not to fake smoothness.