--- title: "HMM Eraser Ball: 66 mm Eraser That Holds Pens and Cards" canonical: "https://stationerytimes.com/guides/hmm-eraser-ball/" description: "HMM Eraser Ball explained: a 66 mm, 165 g eco rubber eraser of six parts that also holds pens and cards, four colors, made in Taiwan, US$15 on the maker's shop." category: "Accessories" type: "Eraser" published: 2026-11-05 updated: 2026-11-05 author: "Ellis Penhale" publisher: "Stationery Times" sources: 2 products: - name: "HMM Eraser Ball" brand: "HMM" brand_origin: "Taiwan" made_in: "Taiwan" material: "Eco-friendly rubber, no PVC, no plasticizer" price_band: "$$ ($5–20 per item, typical US retail, October 2026)" manufacturer: "HMM (Taipei)" sku: "CW-031 to CW-034" url: "https://hmmproject.com/products/eraser-ball" --- # HMM Eraser Ball: 66 mm Eraser That Holds Pens and Cards > The HMM Eraser Ball is a 66 mm sphere of eco-friendly rubber, with no PVC or plasticizer, made of six identical parts around one axis. The parts erase, hold pens and hold business cards in the gaps. HMM lists it at 165 g in four colors, made in Taiwan, at US$15 on November 5, 2026. - URL: https://stationerytimes.com/guides/hmm-eraser-ball/ - Category: Accessories - Author: Ellis Penhale - Published: 2026-11-05 - Updated: 2026-11-05 ![Four HMM Eraser Balls side by side, each 66 mm across and made of six rounded parts, in grey, blue, yellow and peach](https://stationerytimes.com/images/raster/hmm-eraser-ball-illustration-16x9.png?v=7011fc1f) *The four colors at 66 mm across (1 mm = 3.2 px); the seams are drawn by eye and the colors sampled from HMM's photos.* Original illustration made for this guide. © Stationery Times. Original drawing (SVG): . Drawings © 2026 Stationery Times, reusable with credit under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ## Product facts | Product | Brand | Brand origin | Made in | Material | Released | Price range (typical US retail, October 2026) | |---|---|---|---|---|---|---| | HMM Eraser Ball | HMM (by HMM (Taipei)) | Taiwan | Taiwan | Eco-friendly rubber, no PVC, no plasticizer | – | $$: $5–20 per item | - Made in (HMM Eraser Ball): Taiwan. The product page lists Made in Taiwan. It does not name the factory. Source: https://hmmproject.com/products/eraser-ball ### HMM Eraser Ball colors - Body colors (4 standard, 0 special edition): Sesame Grey; Pacific Blue; Sunshine Yellow; Peach Pink. - Per HMM (maker's store): Eraser Ball product photos and color options (https://hmmproject.com/products/eraser-ball), checked 2026-11-05. The maker names four colors. The tints are sampled from its photo of each ball and are representative, not measured. The Peach Pink ball photographs as a peach-tan. Shops stock different colors; check the listing. ## Key takeaways - HMM says the ball is six identical parts and one central axis, inspired by a dandelion seed head, and lists it at 66 mm across and 165 g. - Each part can be used as a pen holder, and the gaps between parts hold business cards; HMM says the center of gravity is calculated so a loose part spins steadily and does not tip over. - The material is listed as eco-friendly rubber with no PVC and no plasticizer; HMM's page gives no hardness or eraser-performance test. - Four colors are listed: Sesame Grey, Pacific Blue, Sunshine Yellow and Peach Pink, and the page lists Taiwan as the place of manufacture. - The maker's store listed it at US$15 on November 5, 2026, in our $$ band ($5 to $20); Sesame Grey was marked sold out that day. ## What is the HMM Eraser Ball? **It is a 66 mm rubber eraser shaped like a ball, built so that its parts also hold pens and cards.** HMM is a Taipei design brand whose name stands for Human, Made, Method. Its store describes the ball as inspired by a dandelion seed head, turned into "six identical parts and one central axis". The shop calls it "the fun eraser with playful functions". We read its English product page on November 5, 2026, and everything here is that page's text unless we say otherwise. ## What are the six parts for? **Each part is an eraser with a rounded edge, and together they make a holder.** HMM says the round edge of each part allows precise erasing, the gaps between parts can hold business cards, and each part can serve as a pen holder. It adds that the center of gravity is calculated so a part can spin steadily without tipping. ![A blue ball 66 mm across beside six identical rounded parts arranged around one central axis](https://stationerytimes.com/images/hmm-eraser-ball-six-parts.svg?v=c5f07857) *The ball and its six parts; only the 66 mm and the six-part, one-axis structure are from HMM, the shapes are by eye. Original illustration made for this guide. © Stationery Times.* HMM does not say how the parts are held together or how many pencils one part takes, so we have not drawn that. ## HMM Eraser Ball specs | Spec | Value | |---|---| | Maker | HMM (Taipei) | | Diameter | 66 mm | | Weight | 165 g | | Material | Eco-friendly rubber, no PVC, no plasticizer | | Parts | Six identical parts, one central axis | | Colors | Sesame Grey, Pacific Blue, Sunshine Yellow, Peach Pink | | Origin | Taiwan | | Price band ($$ = $5 to $20) | $$ (US$15, on November 5, 2026) | ## What colors does it come in? **Four: Sesame Grey, Pacific Blue, Sunshine Yellow and Peach Pink.** We sampled each tint from HMM's photo of that color. The Peach Pink ball photographs closer to a peach-tan than a pink, so treat the swatches as approximate. On November 5, 2026 the store marked Sesame Grey as sold out and the other three as available. ## Who is the HMM Eraser Ball for? **It suits someone who wants one tidy object on the desk that erases, holds pencils and parks a few cards.** The 165 g weight is solid enough to stay put while you erase, though HMM does not say it is meant for that. It is a desk piece, not a pocket eraser. It is a poor pick if you need a large block for heavy erasing or a sharp-edged detail eraser: HMM describes rounded edges and gives no hardness or size per part. For ordinary pencil erasers see our [best erasers](https://stationerytimes.com/guides/best-erasers/) roundup, and for another Taiwanese desk tool see the [HMM Ballpoint](https://stationerytimes.com/guides/hmm-ballpoint/). ## What does HMM not say about the Eraser Ball? **It gives no hardness, no size for a single part and no pencil-grade test.** The page lists 66 mm, 165 g and an eco-friendly rubber with no PVC or plasticizer, then describes functions. It does not say how many cards fit in the gaps, how many pencils one part holds, or whether the parts lock together or are glued. That matters if you buy it mainly to erase: with no hardness figure, check how it handles soft graphite and colored pencil before relying on it. HMM is a design brand first, and the Eraser Ball is sold as a desk object that also erases. ## What does it cost, and where is it made? **US$15 on HMM's own store on November 5, 2026, in our $$ band ($5 to $20).** The page lists Taiwan as the place of manufacture and does not name a factory. HMM says it ships worldwide and lists free shipping over US$150 on its store. Prices change, and we did not check other sellers. HMM also sells the Pocket Ruler and the Ballpoint; see the [HMM Pocket Ruler](https://stationerytimes.com/guides/hmm-pocket-ruler/) guide. More desk picks are in our [best desk accessories](https://stationerytimes.com/guides/best-desk-accessories/) roundup. ## Frequently asked questions ### How big is the HMM Eraser Ball? 66 mm across and 165 g, per the maker. HMM does not give the size or weight of one loose part. ### What is it made of? HMM lists eco-friendly rubber with no PVC and no plasticizer. It does not name the rubber or give a hardness. ### How does it work as a pen holder? HMM says each of the six parts can stand as a pen holder, and that the center of gravity is calculated so the parts spin steadily and do not tip over. With pencils placed in a bucket upside down, it says the parts look like blossoming flowers. ### Can it hold business cards? Yes, per the maker: the gaps between the parts can be used as a business card holder. It does not say how many cards fit. ### Does it erase well? HMM says the rounded edges of each part allow precise erasing. We have not tested it, and the page gives no pencil-grade or smudge test. ### Which colors can I buy? Four: Sesame Grey, Pacific Blue, Sunshine Yellow and Peach Pink, per HMM's store. ### How much does it cost? US$15 for any color on HMM's own store on November 5, 2026, in our $$ band ($5 to $20). Prices change. ### Where is it made? The product page says Made in Taiwan. HMM is based in Taipei. ## Sources - [HMM (maker's store): Eraser Ball, material, size, weight, functions, origin, colors, price (read November 5, 2026)](https://hmmproject.com/products/eraser-ball) - [HMM (maker's store): About HMM, Human, Made, Method, Taipei studio (read November 5, 2026)](https://hmmproject.com/pages/about-us)