In Japan, the ancient koma has been used to carry a variety of "well" such as when children grow into adults with a strong core (self-standing), the speed of rotation, and the speed of rotation, and the overall gold spin.

This is a 2020 planning of the "turning ism project" that was created with the idea that Edokos fashionable gendering can be delivered to the world from the factory in Katsushika district.

What is YenSpin?

Made by Mitsumi Manufacturing Factory, a town factory in Katsushika District + Equipped with NSK Micro Precision Ball Bearings + Yoyo Former World Champions precision pieces. This is a link from a cloud funding, KICKSTARTERs project. Ball bearings are attached to the shaft, making it a completely different way to play with. Note: The brass body is plated and has a certain degree of resistance to rust and other deterioration, but if it gets scratched due to falls, the brass on the ground may be seen. Diameter 1.0 inches (25 mm) x Height 1.0 inches (25 mm) x Weight 0.8 oz (25 g) x Body Material: Brass, aluminum, bearings

Structure/component

The structure is very simple.The component is very simple.

The 1.0 inch (25 mm) diameter body combines the brass body and aluminum shafts that are shaved from Mitsumi Seisakushi Machine’s town factory, Katsushika.In addition, the brass body is gold plated (18K).

The main body is made of a gold plated brass and an aluminum shaft axle machined by Mitsumi Seisakusho, a precision CNC factory in Katsusika, Tokyo.

It is centered on the NSK Micro Precision domestic ball bearings.With an outer diameter of 0.3 inch (8 mm) and an inner diameter of 0.1 inch (3 mm) these bearings play a very important role in maximizing the moment of inertia and stable rotation.

It has ball bearing made by NSK Micro Precision in Japan.

693 bearing with an outer diameter of 8 mm and an inner diameter of 3 mm plays a very important role in maximizing the moment of inertia of the main body and stabilizing the rotation of the axle.

Made by NSK Micro Precision with domestic ball bearings.

It is centered on the NSK Micro Precision domestic ball bearings.With an outer diameter of 0.3 inch (8 mm) and an inner diameter of 0.1 inch (3 mm) these bearings play a very important role in maximizing the moment of inertia and stable rotation.

It has ball bearing made by NSK Micro Precision in Japan.

693 bearing with an outer diameter of 8 mm and an inner diameter of 3 mm plays a very important role in maximizing the moment of inertia of the main body and stabilizing the rotation of the axle.

About Axis

The tip of the shaft is made of high carbon chrome bearing steel (SUJ), which is an important part for balance of rotation, is made of Tenjji Steel Ball Seisakushis high carbon chrome bearing steel (SUJ), and contains 3/32" steel balls. These steel balls are said to be the most "true circle" object on Earth.

The tip of the axle is an important part that prevents wear and controls the balance of the rotation. Made of carbon chromium bearing steel (SUJ), 3/32" steel balls by Amatsuji Steel ball MFG. steel ball is said to be the closest thing to "a perfect circle on Earth."

Structure/component

Made by NSK Micro Precision with domestic ball bearings.

About Axis

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