Plus Kurutto Eraser Review: A Twist-Up Eraser That Stays Usable to the Last Bit

Introduction

Most erasers follow the same lifecycle: they start wrapped in a paper sleeve, shrink with use, and eventually become a stub too small to hold before you tear off the cover and bin the remains. Plus Corporation’s Kurutto eraser, released in March 2022, takes a different approach by wrapping a standard-sized eraser in a newly developed plastic case with a rotating base. The result is a small but genuinely clever stationery upgrade from a manufacturer with a long track record.

Plus itself is worth a quick introduction. Founded in 1948 and headquartered in Minato, Tokyo, the company produces a broad range of stationery and office supplies, from pens and paper to office furniture, household goods, and educational equipment. Kurutto fits neatly into that tradition of practical everyday design.

How the Twisting Case Works

The core idea is simple: instead of holding the eraser itself, you hold the case. A hole runs through the center of the eraser and fixes it to the bottom of the case, and rotating the base moves the eraser up and down in the same way a lipstick tube works. As the eraser wears down, you twist to expose more, which means it stays comfortable to grip until the very last piece.

Two details make the mechanism feel well executed rather than gimmicky. First, the case cover is deliberately thin, so it offers much the same comfortable feel as erasing with a standard bare eraser. Second, the rotation is smooth and clicks into place at each step, and the eraser sits securely: a light pull does not dislodge it, and only a genuinely forceful tug will. For a product meant to be carried around in a pencil case, that security matters.

Everyday Writing and Erasing Performance

In use, the Kurutto is easy to hold and erases cleanly with very little pressure applied. The eraser is 66mm long, 21mm wide, and weighs 16g, which puts it at roughly the same size as a standard eraser, so there is no compromise on the actual erasing surface.

The eraser body is hexagonal with rounded corners. That shape makes it easy to erase small details and tight spots, since the corners can reach where a fully rounded block would struggle. It is a small touch, but it is the kind of thing you notice during actual note-taking rather than in a spec sheet.

Colors and Design Appeal

The case comes in five colors: green, pink, blue, yellow, and purple. The palette is bright and playful, which suits younger users and anyone who enjoys cheerful desk accessories. It is worth noting that the pop design may feel a bit loud in a formal office setting; a more subdued version with chic colors such as black would be a welcome addition for working professionals. That said, this is a quibble about styling rather than function.

Things to Consider Before Buying

The Kurutto’s main limitation is ecosystem lock-in: it uses Plus’s dedicated eraser refills rather than any standard eraser block. That is a minor issue since refills are inexpensive, but it does mean committing to the system. The playful color range is also unlikely to suit every workplace taste. Neither point undermines what is otherwise a very well-designed product.

Buying Advice and Value

The launch configuration is a limited-edition pack that includes the main unit, an eraser, and a refill, with the case priced at 165 yen including tax. The dedicated eraser refills come in a pack of two for 132 yen including tax, which makes ongoing use very affordable. The launch pack with the included refill offers good value while it lasts.

For students, journalers, and anyone who writes in pencil daily, the twist-up case solves a real annoyance at a low price. If you are buying one, the launch pack with refill is the sensible entry point, and a two-pack of refills will carry you a long way afterward.

Conclusion

The Plus Kurutto is a thoughtfully engineered take on an object that has barely changed in decades. The rotating case keeps a standard-sized eraser comfortable to hold from first use to final stub, the thin cover preserves a familiar erasing feel, and the price is modest. If shrinking paper sleeves and unusable eraser stubs bother you, this is an easy recommendation.