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Logitech · Productivity

Pinky rest for the Logitech MX Master 4

A customer says it fits

A customer told us the dock fits their Logitech MX Master 4; we have not tested one ourselves yet.

Illustration: the kit on the right side of a Logitech MX Master

Universal Magnetic Kit

US$24.99

★ 5.0 · 6 reviews

Glides on PTFE feet, like your mouse

Free US & Canada shipping · 30-day returns, even after it is stuck on

Illustration: the kit on an MX Master.

Get it — US$24.99

Not your mouse? Find yours

“Fits my MX Master 4 Mouse GREAT! Highly recommend it!”
Eric · ★★★★★ verified Etsy review · Apr 2026 · Came back for a second kit, for a second mouse · all reviews
“Perfectly fit my Logitech MX Masrer 3S!”
Eric · ★★★★★ verified Etsy review · Apr 2026 · First of two orders · all reviews

What it is: a thin dock sticks to the right side of your mouse and a grip snaps onto it, so your pinky rests there instead of dragging on the mousepad.

Why the Universal Kit
It is the kit the customer who reviewed the MX Master 4 used, and its three grip sizes let you match your hand.
Weight
The grips weigh 3 g, 5 g or 6 g (Small, Medium, Large), about one or two US pennies.
Glide
Every grip rests on slick glides on the mousepad (PTFE, the same material as your mouse feet), so it slides with the mouse rather than dragging beside it.
Shipping · returns
Free US & Canada shipping · 30-day returns, even after it is stuck on · Lifetime replacement
About the MX Master 4
The MX Master 4 keeps the family's sculpted right-hand shape with a flat, button-free pinky side. One of our reviewers put it plainly: "Fits my MX Master 4 Mouse GREAT!" That review is on our Etsy shop, and it is the reason this mouse is listed at all. That is a customer telling us, not our own bench test, so we list it as reported.

The photo shows the kit on a Logitech G502. The dock mounts the same way on the Logitech MX Master 4's flat right side.

Illustration: the pinky rest kit on the right side of a black Logitech MX Master, on a desk pad
Illustration: the kit on the right side of an MX Master.

Logitech MX Master 4 questions.

Does it fit the MX Master 4?

A customer told us it fits their Logitech MX Master 4 and we are quoting them. We have not had one on the bench ourselves, so we will not call it confirmed. The Logitech MX Master 4 does have the flat pinky-side panel the dock needs. Email a photo of your mouse's right side to [email protected] and a person will tell you within 1–2 days.

Does the rest touch my mousepad?

Yes, on purpose. Every grip in both kits has PTFE skate glides underneath (the same slick material as mouse feet) that ride on the mousepad, so your pinky rests on something supported and the grip slides with the mouse instead of dragging. The rest itself sits just above the pad on those glides.

Which grip size is right for the Logitech MX Master 4?

The Universal Magnetic Kit ships all three (Small, Medium and Large), so you do not have to guess. Snap one on, use it for a workday, swap if it is wrong. It is the kit the customer who reviewed the MX Master 4 used, and its three grip sizes let you match your hand.

Will it damage my Logitech MX Master 4?

The dock mounts with 3M VHB, the same adhesive used on interior car trim. On hard plastic it comes off clean after a few seconds of hair-dryer warmth and a slow peel. We have not yet peeled one off the MX Master's soft-touch coating ourselves, so on this mouse we do not promise a spotless peel until we have.

Can I use the same grips on a second mouse?

Yes. Add a Spare Magnetic Dock (US$9.99) to the second mouse and the grips you already own snap straight over to it.

The other kit

Contoured Magnetic Kit — US$24.99

A single contoured grip shaped to the natural curve of your hand, on the same magnetic dock. Slick glide pads on the underside let it slide on your mousepad. For anyone who wants one curved shape instead of three sizes.

Which one? Same price, and both ride the same magnetic dock, so every Reaper Mods grip you own works on either. For the Logitech MX Master 4 we suggest the Universal Kit above. Pick the Contoured Kit instead if you want one larger curved grip that cradles your outer hand, with no size to choose.

View the Contoured kit
How it mounts on the Logitech MX Master 4

Peel. Stick. Snap.

  1. 1. Clean the pinky side

    Wipe the flat right-side panel of the Logitech MX Master 4 with rubbing alcohol so the 3M tape gets a clean surface.

  2. 2. Press the dock on

    Peel off the backing and press the thin dock onto that spot for 30 seconds. Then wait a few hours before heavy use, so the tape grips fully.

  3. 3. Snap on a grip

    Swap between Small, Medium and Large mid-session, no tools. All three are in the box, and all three glide on the pad.

Other mice

Also on the shelf.

Give your pinky a rest on the Logitech MX Master 4.

One dock, three grips, free shipping, and a lifetime replacement if anything ever breaks.

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