ISC and Sorohamu Develop World's Smallest Bearing Spinning Top Big Wing pico
The release follows the 2025 SG Kendama pico, making the bearing-equipped spinning top the second high-precision skill toy from the same collaboration, part of ISC's push to use bearings to teach science through toys.
Reporting from 1 source: Dengeki Hobby Web.
ISC and Sorohamu have developed the Big Wing pico, a 35 mm diameter spinning top that they call the world's smallest bearing-equipped top. It will be sold early at the Spin Gear booth at TOKYO TOY SHOW 2026, running August 27 to 30 at Tokyo Big Sight, with general release on September 1. Two models launch: a bimetal and a monometal.
The top measures about 41 percent of the diameter of the existing Big Wing model while keeping its spin performance, according to the developers. The precision bearing inside is the same type of ISC component used in cooling fan motors for data centers, and the body is manufactured in Japan using Mitsumi Seisakusho's high-precision processing.
Design work came from Sorohamu, which handled the SG Kendama pico that released in 2025. The shape was refined to be easy to handle even for professional performers. The bimetal model pairs an aluminum body with a stainless steel outer ring, while the monometal version uses stainless steel throughout to survive drops.
- Bimetal model: Aluminum body, stainless steel outer ring, priced at 7,700 yen including tax
- Colored bimetal model: Aluminum anodized body, brass outer ring
- Monometal model: Stainless steel body and outer ring, designed to withstand drops
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.